Five hundred randomly selected automobile owners were questioned on the main reason they had purchased their current automobile; that is, if their automobile preference is related to their gender. The results are given below.

Q: Determine the P-value for a one-sided test with z = 1.89

A: here given , hypothesis test is one tail  test statistic  =  1.89  use excel command for p -value

Q: Cola A 59 89 72 HEHEHERRS Cola B 90 71 77 81 86 83 87 Cola A 76 87 60 60 72 Cola B 88 80 69 93

A: If x1, x2, x3,........, xn are the n number of observations then the mean is calculated by using the…

Q: Read the following problem description then choose the correct null and alternative hypothesis. A…

A: Given claim is,A particular region of the country has been linkedto a decrease in the rate of asthma…

Q: The hypothesis test ?0:?=0.42 ?1:?≠0.42 is to be carried out for a random sample of 175. The test…

A:

Q: Use the results from a survey of a simple random sample of 1256 adults. Among the 1256 ​respondents,…

A: The sample size is n=1256

Q: Determine the P-value for a two-sided test with t = 2.85 and n=9 Oa. 0.035 O b. 0.01 OC. 0.015 O d.…

A: Given information- We have given the two-sided t-test. The value of the t-test is, t = 2.85 Sample…

Q: Data for (3) A random sample of 100 statisticians were asked, "To what extent do you feel the…

A: Solution To draw the distribution pie chart is appropriate because the sample size is large and the…

Q: In 2016, the US poverty rate was 12.7%. During that year, 370 families where randomly selected in…

A:

Q: Perform a hypothesis test to test whether there is a difference in the average price. Use a = 0.05

A: Let μ1 and μ2 are the average prices of couches at two different stores. Given that,…

Q: Conduct the proper test to determine whether a cold medicine improves symptoms (lower scores…

A: Given data: Placebo Medicine 7 5 8 8 6 3 9 6 11 10 10 4 6 7 9 4

Q: Two possible p-values are given for a test. Which one provides the strongest evidence against H O…

A: Two possible are given for the testp value=0.200p value=0.07The Smaller p-value indicates the…

Q: Only about 17% of all people can wiggle their ears. Is this percent higher for millionaires? Of the…

A:

Q: A: Is this a one-tail or a two-tail test? B: What is the alpha level of this test? C: What is the…

A: Given that  Hypothesized Population Mean (\mu)(μ) = 7373 Population Standard Deviation…

Q: Nine students took a standardized test. Their scores are listed below. Later on, they took a test…

A: The wilcoxon signed ranks test, checks the median difference between two paired groups. If the…

Q: Assuming all conditions for the appropriate test are met, the agriculturalist reported a p-value of…

A: Given, p value = 0.072 α = level of significance =0.05

Q: random sample of 20 young men was taken. One half of the group was given coffee containing caffeine…

A: Given n1=12 n2=8 S1-SQUARE=31.11 S2-square=28.67

Q: The numbers of online applications from simple random samples of college applications for 2005 and…

A:

Q: Is there an association between whether adults eat breakfast and whether they own a pet? To…

A: To find: If there is an association between whether adults eat breakfast and whether they own a pet

Q: What is the right test for questions 1-3

A: 1. We will use the one-sample t-test for the single mean. Since n<30 and population standard…

Q: Find the standardized test statistic to test the claim that , =H2. Two samples are randomly selected…

A: Given that,mean(x)=20standard deviation , σ1 =2.5number(n1)=40y(mean)=21standard deviation, σ2…

Q: Is the proportion of teenagers with Back pain the same as those without back pain? A random sample…

A: We have to perform test for proportion.

Q: A clinical psychologist is investigating the relationship between sleep and feelings of anxiety. For…

A: The sum of squares of in "Hours of sleep" is SSx=16  The sum of squares of in "Anxiety scores" is…

Q: Students in a high school statistics class are investigating the proportion of times a Hershey's…

A: We have to find correct conclusion from available options.

Q: Find the standardized test statistic, z to test the claim that p, = p2. The sample statistics listed…

A: The sample proportions are: The value of the pooled proportion is computed as :

Q: Group A n = 120 Group B n = 150 X2 = 61.8 S2 = 2.62 X,= 62.7 S1= 2.5 Do these samples constitute…

A:

Q: Only about 15% of all people can wiggle their ears. Is this percent different for millionaires? Of…

A: Given that,possible chances (x)=46sample size(n)=350success rate ( p )= x/n = 0.1314success…

Q: The table below shows results from a recent General Social Survey on two variables, respondent sex…

A: Null hypothesis: Null hypothesis is the statement about parameter of population. Alternative…

Q: se the correct answer below. b. The test statistic is z= c. The​ P-value is enter your response…

A:

Q: Time magazine reported the result of a telephone poll adult Americans. The question posed of the…

A: The two proportions z - test would be an appropriate to compare the significant difference between…

Q: Suppose that in a random selection of 100 colored candies, 24% of them are blue. The candy company…

A: Introduction: Denote p as the true proportion of blue candies.

Q: At the a Y 0.05 significance level, what is the most appropriate conclusion to draw from this test?

A: To make decisions about hypothesis, we make comparison of p-value and level of significance.

Q: 143 individuals who had two warts. She applied cream A on one wart and cream B on the second wart.…

A: The effectiveness of a new cream in the two treatments of warts is measured. Sample size (n) = 143…

Q: What is the correct decision for a test of the difference in two proportions if the test statistic…

A: It is given that the test statistic is 1.99.

Q: We conduct a test of hypothesis of Ho : p = 0.3 vs. HA : p > 0.3. The value the test statistic is…

A: Given : Null and alternative hypothesis is Ho : p = 0.3 Ha : p > 0.3 Test statistic, Z = -2

Q: ​(a) Find the test statistic. ​(b) Find the standardized test statistic.

A: Given : Hypothesis: Ho: μ1=μ2 α=0.01 X1=32.9 S1=3.7n1=12X2=31.6 S2=2.7n2=10

Q: Scenario: 200 people were asked, “Who is your favorite superhero?” Below are the data.  Test the…

A: Given, Sample size: N=200 people were asked, “Who is your favourite superhero?” Test the null…

Q: ar. A researcher wants to determine whether smoking habits and seat belt usage are re esearcher's…

A: Given 0.05 level of significance

Q: A hypothesis was done using Ho: p=15% HA: p>15% The hypothesis test where p= the percentage of…

A: Given : P-value of the test = 0.0007

Q: Q5. To compare the customer satisfaction levels of two competing companies, 174 customers of company…

A: We have given that  Sample sizes n1=174 ,n2=355  , xbar1 =3.51 ,xbar2 =3.24 , and standard deviation…

Q: When we test the hypothesis that the population proportions are equal, we can use the Z test for a…

A: It is given that the statement about to the hypothesis test.

Q: Members of fraternities and sororities are required to volunteer for community service. Do…

A: Given that                        We have to conduct hypothesis testing for difference of two…

Q: All Test the claim about the population mean, u, at the given level of significance using the given…

A:

Q: A public opinion poll surveyed a simple random sample of voters. Respondents were classified by…

A: Given The data is as follows:   Republican Democrat Independent Female 261 239 42 Male 202…

Q: Scenario: 200 people were asked, “Who is your favorite superhero?” Below are the data.  Test the…

A: Given Information: 200 people were asked “Who is your favourite superhero?” Categories Observed…

Q: ative cars among residence of two neighboring cities differ. In order to est, the researcher…

A: Sample sizes n1=185  , n2=195 Favorable cases x1=75 , x2=68