ou are conducting a Mann Whitney U test The U statistic is 40 and the critical value is 20 Is your result significant? Yes because the U statistic is not higher than the CV No because the U statistic is higher than the CV No because the U statistic is not higher than the CV choose one choose one

Q: #2a. Consider a t distribution with 10 degrees of freedom. Compute P(t < -1.74). Round your answer…

A: Degree of freedom =df =10

Q: A study identified Bridgeport, Connecticut, San Jose, California, Washington, D.C., and Lexington…

A: The parametric test which to test the independency among the categorical group is the chi-square…

Q: Describe the importance of statistical methods in the health research. 2. Define measurement. 2.…

A: Statistical methods play a crucial role in health research as they help researchers to analyze and…

Q: 20. Find the mean and standard deviation of the following data:

A: Class Frequency 1 - 5 2 6 - 10 5 11 - 15 2 16 - 20 1

Q: You measure 35 backpacks' weights, and find they have a mean weight of 64 ounces. Assume the…

A: n = 35x¯ = 64σ = 499% ci for μ = ?

Q: #7. A psychologist is studying the self image of smokers, which she measures by the self image (SI)…

A: Population standard deviation =82 Margin of error =E =10

Q: Assume that the height of adult females in the United States is approximately normally distributed…

A: Answer: From the given data, mean (μ) = 66 standard deviation(σ) = 2.6 Sample size(n) =10

Q: Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean…

A: Let X be the diameter of the current steel bolts. μ=143 σ2=64 ⇒σ=8 The random sample size: n=48

Q: Is there evidence of a difference in the proportion of male and female students who smoke among all…

A: Hypothesis is an assumption that is being tested.

Q: A random sample of 64 is taken from a large normally distributed population with a mean μ=100 and…

A: Answer: From the given data, Mean μ = 100 Standard deviation σ = 15 For a sample size of n = 64

Q: . Determine the number of distinguishable arrangements of shirts possible for the display.

A: George is creating a display table for a shirt sale. There are 15 total shirts to display one by…

Q: Assume that when adults smartphones are randomly selected 33% use them in meetings or classes. if 25…

A: Answer: From the given data, Sample size(n) = 25 p = 33% = 0.33

Q: Suppose the age that children learn to walk is normally distributed with mean 11 months and standard…

A: X~N( μ , ?)   μ=11 , ?=2.4  , n=35   Z-score =( x - μ )/?   NOTE:- According to bartleby guidelines…

Q: What is the chi-square test-statistic for this data? x² =

A: Let the two variables be population A and population B. Category Population 1 Population 2 Total…

Q: A simple random sample of size n is drawn from a population that is normally distributed. The sample…

A: "We are entitled to solve only three sub-parts at a time. As you have posted more that that, we are…

Q: When computing descriptive statistics for variables measured on a continuous scale, we run…

A: The question of how to analyze and present data that has been measured on a continuous scale is an…

Q: Determine the point estimate of the population proportion, the margin of error for the following…

A: The given lower bound is 0.320 and upper bound is 0.590 and the sample size n is 1200.

Q: Possible outcomes for three investment alternatives and their probabilities of occurrence are given…

A: Given data: The average and standard deviation of a probability distribution (where, a random…

Q: 3b

A:

Q: 1) Look at the following diagrams. Which show high linear correlation, moderate or low linear…

A: The scatterplot is a graphical representation which shows the relationship between 2 variables.

Q: True or False? For a two-tailed test using z values at the 5% significance level we reject H0 if z ≤…

A: The hypothesis test is two tailed. significance level (α) = 5% = 0.05

Q: why isn't there sufficient evidence to support the claim?

A: The given claim is that the average monthly electric bill for Houston in August is more than $150.…

Q: QUESTION 2 To setup statistical process control the following data was collected. Number of Samples…

A: a. The correct Statistical Process Control chart to use for this data is the p-chart. The p-chart is…

Q: You are given the sample mean and the population standard deviation. Use this information to…

A: random sample of 45 business​ days, the mean closing price of a certain stock was​$111.24.Assume the…

Q: Find the value of E, the margin of error, for c = 0.95, n = 15 and s = 5.6. O 3.10 2.55 O 3.19 0.80

A: Answer: From the given data, Confidence coefficient (c) = 0.95 Sample size (n) = 15 Standard…

Q: ….. a. Find the percentage of men meeting the height requirement. What does the result suggest about…

A: A survey found that women's heights are normally distributed with mean 63.7 in. and standard…

Q: Evaluate a randomized control trial (RCT). For each of the below examples, briefly discuss [in 3-4…

A: World Bank conducts RCT of a program in Indonesia which aims to provide farmers with spot and…

Q: 11. Two measures of a baseball player number of times he "bats in" a run (knows as "Runs Bat hits?…

A: Simple linear Regression equation:  It deals with one dependent variable and one independent…

Q: Find the mean for the given data set, 22,35,37,45 and 66

A: Answer: From the given data, 22,35,37,45 and 66 Sample size(n) = 5

Q: QUESTION 3 To setup statistical process control the following data was collected. Number of Samples…

A: a. The correct Statistical Process Control chart to use for this data is the p-chart. The p-chart is…

Q: If n=19, (x-bar)=34, and s-10, find the margin of error at a 99% confidence level Give your sprior…

A: Given that  n=19, (x-bar)=34, and s=10, confidence level = 99%

Q: #17. A random sample of 225 individuals working in a large city indicated that 72 are dissatisfied…

A: n=225, X=72

Q: Alcohol withdrawal occurs when a person who uses alcohol excessively suddenly stops the alcohol use.…

A: μ = 40.5σ = 18n = 38P(x¯≤37.5) = ?

Q: QUESTION 4 To setup statistical process control we sampled Day Defectives 1 36 2 27 3 33 4 36 325 5…

A: The appropriate Statistical Process Control (SPC) chart to use for this data is the c-chart. The…

Q: A concerned professor wants to find out the average number of hours his students sleep. He asks his…

A: The sample size: n=15 The sample mean x¯=6.3333 The sample standard deviation: s=2.320  The…

Q: If n=28, x(x-bar)=44, and s=10, construct a confidence interval at a 95% confidence level. Assume…

A: From the provided information, Sample size (n) = 28 Sample mean (x̄) = 44 Sample standard deviation…

Q: An Australian Shepherd breeder has had three litters of puppies from the same set of parents. The…

A: The given data is as follows, Black and White Red and White Black with spots Red with spots 4 6…

Q: A curious farmer undertakes the following activities in her farm. 1. She plants 80 tree seedlings on…

A: There are four activities given in this question along with the data generated from them. Heights…

Q: In each case, find the approximate sample size required to construct a 95% confidence interval for p…

A: From the provided information, Confidence level = 95% Sampling error SE=0.08

Q: #6. A random sample of 200 individuals working in a large city indicated that 42 are dissatisfied…

A: Sample size n=200 Favorable cases x =42 Sample proportion p^=x/n  =42/200 =0.21

Q: A t-test would NOT be appropriate for which sample size? a.27 b.17 c.16 d.57

A: The question is about t test Introduction : t test : 1 ) This test is used check whether the mean of…

Q: The better-selling candies are often high in calories. Assume that the following data show the…

A: The data for samples of three types of chocolates are given as- M&amp;M's Kit Kat Milky Way II…

Q: (a) consider a T distribution with 2 degrees of freedom. Compute (-1.01 < t < 1.01). Round your…

A: T distribution with 2 degrees of freedom

Q: You are given the sample mean and the population standard deviation. Use this information to…

A: The sample size is 55, sample mean is 127 and population standard deviation is 15.6.

Q: Consider the following hypothesis test. H0: ?1 − ?2 ≤ 0 Ha: ?1 − ?2 > 0 The following results are…

A: The given hypothesis is, Null hypothesis: H0:μ1-μ2≤0 Alternative hypothesis: Ha:μ1-μ2&gt;0

Q: According to a reputable magazine, the dropout rate for all college students with loans is 30%.…

A: From the provided information, The dropout rate for all college students with loans is 30% that is p…

Q: Many college admissions want to know your class percentage in addition to your grades.  The grades…

A: Consider that a random variable x, defines the grades.

Q: Any study of pain, relievers, 100 people were given product A, and 67 experience relief. In the…

A: Number of people who experienced pain relief from product n(A) = 67 Total number of people who…

Q: Two independent samples A and B of size 7 each have scores 55, 42, 46, 45, 38 49, 40 and B has 50,…

A: A :  N1=7  df1 = N- 1 = 7-1 = 6  { 55,42,46,45,38,49,40 }  M1 = (55+...40)/7 = 45 B:  N2=7  df2 = 6…

Q: The weights of full boxes of a certain kind of cereal are normally distributed with a standard…

A: Population standard deviation σ=0.27 Sample size n=15 Sample mean x¯=9