Math

StatisticsQ&A LibraryEach year, more than 2 million people in the United States become infected with bacteria that are resistant to antibiotics. In particular, the Centers of Disease Control and Prevention have launched studies of drug-resistant gonorrhea.t Suppose that, of 174 cases tested in a certain state, 11 were found to be drug-resistant. Suppose also that, of 375 cases tested in another state, 7 were found to be drug-resistant. Do these data suggest a statistically significant difference between the proportions of drug-resistant cases in the two states? Use a 0.02 level of significance. (Let p, = the population proportion of drug-resistant cases in the first state, and let p, = the population proportion of drug resistant cases in the second state.) State the null and alternative hypotheses. (Enter != for # as needed.)Start your trial now! First week only $4.99!*arrow_forward*

Question

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: A radar unit is used to measure speeds of cars on a highway. The speeds are normally distributed wit...

A: Solution: Let X be the speed of car on a highway. From the given information, X follows normal distr...

Q: In Jolie’s new Thai restaurant, she observes the age of her customers and notes down which of the gr...

A: Jolie for her new restaurant divided Age of her customer in 2 categories -18 years old and below’ or...

Q: A delivery truck travels from point A to point B and back using the same route each day. There are f...

A: (a) The marginal distribution of Y is y 0 1 2 3 4 P(Y=y) 0.13 0.21 0.31 0.23 0.12 For the ...

Q: A population has a mean of 80 and a standard deviation of 7. A sample of 49 observations will be tak...

A: Click to see the answer

Q: IQ scores are normally distributed with a mean of 100 and a standard devaition of 15. What IQ score...

A: Given: μ=100σ=15

Q: A random sample of 50 binomial trials resulted in 20 successes. Test the claim that the population p...

A: It is given that, Number of trials (n)=50 Number of success(f)=20 we have to test the claim that the...

Q: Mean, median and mode are descriptive statistics that we often use when answering scientific questio...

A: There are four level of measurement: Nominal, Ordinal, Ratio, Interval. The mean, median and mode ar...

Q: The 99% confidence interval estimate for the proportion of females who get pregnant at the age of 12...

A: Click to see the answer

Q: Draw a normal curve and label it with the following items for a two-tailed hypothesis.a. Alpha level...

A: Given information Two tailed Hypothesis P( Z < -z) +P(Z>z) = 0.05 2P(Z < -z) = 0.05

Q: Twelve different video games showing substance use were observed and the duration of times of game p...

A: Download link for excel: https://drive.google.com/file/d/1i6s0L1iLR_S4wf_RvoXeCVVk1fYMwtrF/view?usp=...

Q: The probability that z lies between -2.41 and 0

A: Click to see the answer

Q: In a certain section of Southern California, the distribution of monthly rent for a one-bedroom apar...

A: Given: μ=$2250,σ=$290,n=45.Let, X be the sample mean of one-bedroom apartments.

Q: Childhood participation in sports, cultural groups, andyouth groups appears to be related to improve...

A: Given that, Sample size n=100 Sample mean M=53.8 Population mean μ=50 Population standard deviation ...

Q: Please shoe how to solve this problem using the TI 84 in finding the critical value. Thank you in ad...

A: The hypothesis to be tested here is: H0: There is no significant difference between the lifetimes of...

Q: The joint pmf of X and Y is f(x, y) = 1/6, 0 ≤ x+y ≤ 2, where x and y are nonnegative integers. Comp...

A: Joint pdf of X & Y is f(x,y)=1/6; 0≤x+y≤2, x,y>00 ; elsewhere Marginal pdf of X is ...

Q: please work out as you would with a calculator not the book method a ti-83 or ti-84 Coca Cola bot...

A: Given: μ=299 mlσ=3 mln=6

Q: A clinical trial is conducted to compare an experimental medication to placebo to reduce the symptom...

A: This is two proportions Z-test. Rejection criteria: Reject the null hypothesis if |Z|>Zc at 0.05 ...

Q: The 10th percentile implies that the probability is 0.1. P[X−μσ<x−30030]=0.1P[Z<x−30030]=0.1⇒x...

A: Since 10th percentile means 0.1, find the value from the table which is very close to 0.1. According...

Q: The gasoline price often varies a great deal across different regions across country X. The followin...

A: Objective: To test is there any significant difference in the mean price of gasoline for the three b...

Q: Age at onset of dementia was determined in the general population to be 70 and standard deviation 5....

A: Given Information: Age at onset of dementia was determined in the general population to be mean 70 a...

Q: Given a normal distribution with mean of 40 and standard deviation of 5, find the x value that has 4...

A: The mean is 50 and the standard deviation is 5.

Q: In a recent survey at a small Midwestern college, 39 of 140 randomly selected students revealed that...

A: Here it is given that- total number of observations(n) = 140 Proportion (p) = 39140= 0.28 So, q = 1-...

Q: 11.6.15 The table shows the distribution, by age, of a random sample of 3160mo...

A: It is given that the number of moviegoers is 3,160.

Q: please use the calculator method to work this how you would work it in a ti-83 or ti-84 calculator ...

A: The given informations are: μ=10.5, σ=2.2 n = 50 x = 11

Q: Not sure what went wrong? Thank you!

A: It is given that the level of significance is 0.001.

Q: 1 There is a provide an estimate of the population mean GMAT score that is within +/-10 of the actua...

A: Since, you have posted a question with multiple subparts, we would solve first three parts, If you w...

Q: 11.6.75 One card is randomly selected from a deck of cards. Find the odds against ...

A: Click to see the answer

Q: Round off your two decemal places

A: Class interval frequency, f mid point, m fm m-x m-x2 f(m-x)2 10-15 6 12.5 75 -13.2 174.24 1045.44 ...

Q: The failure rate for taking the bar exam in Philadelphia is 41%. If 375 people take the bar exam, w...

A: Given that, The failure rate for taking the bar exam in Philadelphia is 41% i.e. probability, p = 0...

Q: A normal population has a mean of 55 and a standard deviation of 14. You select a random sample of 2...

A: From the provided information, Mean (µ) = 55 Standard deviation (σ) = 14 Let X be a random variable ...

Q: when samples of size 25 are collected from a normal population that has a mean of 100 and a standard...

A: The sample standard deviation (s) is equal to the ratio of standard deviation of the population σ an...

Q: The undergraduate grade point averages (UGPA) of students taking an admissions test in a recent year...

A: The mean is 3.26 and the standard deviation is 0.16.

Q: dults aged 18 years old and older were randomly selected for a survey on obesity. Adults are conside...

A: Let p1 denote the proportion of southern women who are obese and p2 denote the proportion of souther...

Q: Claim: The standard deviation of pulse rates of adult males is less than 10 bpm. For a random sampl...

A: Given, n=152 and σ=9.7 The claim is – "The standard deviation of pulse rates of adult males is less ...

Q: Find the area of the shaded region. The graph depicts the standard normal distribution of bone densi...

A: Click to see the answer

Q: Consider the following random experiment: First, roll a die and observe the number of dots facing up...

A: Sample space The set of all possible outcomes of a random experiment is called sample space of the e...

Q: X is a normally distributed random variable with a mean of 20 and a standard deviation of 4.75. The ...

A: Given that X is a normally distributed random variable

Q: assume that random guesses are made for eight multiple choice questions on an SAT test, so that ther...

A: According to the provided information, n=8 p=0.20

Q: Questions 12 to 20 are based on the following problem: Loftus and Palmer study (1974) demonstrated t...

A: Given, Null and alternate hypotheses are stated below: Null hypothesis: H0 : μ1 = μ2 That is, there ...

Q: Please see problem with the solution: after reviewing the information below, assess the appropriaten...

A: The important results that can be seen in the analysis are, 1)R-Sq 2)estimate of error standard dev...

Q: The display provided from technology available below results from using data for a smartphone carri...

A: Suppose, X be the smartphone carrier's data speeds at airports. X follows normal distribution with ...

Q: please answer 3.18 use the example 3.17 method

A: Let ex=E(TaX0=x) , for x = a, b, c. Thus, eb is the desired expected return time, and ea and ec are ...

Q: CONFIDENCE INTERVALS FOR THE DIFFERENCE IN 2 POPULATION PROPORTIONS Pharmaceutical scientists tested...

A: A confidence interval provides an interval for the estimate of the population parameter. p1 be the p...

Q: Not sure what went wrong? Thank you!

A: Click to see the answer

Q: If X is a continuous random variable with a density that is symmetric aboutsome point, ξ , show that...

A: Introduction: Given that X is a continuous random variable with a density that is symmetric about th...

Q: If P(A) = 0.45, P(B) = 0.55, and P(AUB) = 0.78, then P(A|B) =

A: Click to see the answer

Q: Draw the type I and type II error matrix and fill in each cell with the correct labels.

A: Type I error is the rejection of null hypothesis when it is true. Type II error is the accepting nul...

Q: Two samples, each with n = 10 participants, have a pooled variance, sp2 = 180. What is the estimated...

A: From the provided information, Sample size (n1) = 10 and n2 = 10 Pooled variance (sp2) = 180 Pooled ...

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard...

A: Given: 2.2% of the thermometers are rejected because they have readings that are too high and anoth...