a. Calculate the rank correlation coefficient. b. Test the hypothesis @.05 level of significance.
Q: Spam: A researcher reported that 71.8% of all email sent in a recent month was spam. A system…
A: Given information:
Q: Test whether the correlation (without Northern Ireland) is statistically significant (i.e.,…
A: Test whether the correlation (without Northern Ireland) is statistically significant
Q: A study of 26 worldwide financial institutions showed the correlation between their assets and…
A: From the provided information, Sample size (n) = 26 Level of significance (α) = 0.025 Correlation…
Q: 2. A teacher claims that his students have an average social media usage that is different from 1.83…
A: Introduction: t-test: The t-test is used if the sample size of the sample under study is small…
Q: in a clinical trial of a drug intended to help people stop smoking, 126 subjects were treated with…
A: The power of the test, in this case, is 1—β= 0.95 (that is, the complement of β), indicates the…
Q: est the claim that the proportion of people who own cats is smaller than 20% at the 0.10…
A: given data, claim:the proportion of people who own cats is smaller than 20% at the 0.10…
Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…
A: Answer: To calculate the value of chi-square test statistics.
Q: A group of transfer bound students wondered if they will spend the same mean amount on texts and…
A: Difference in means = Mean(u) - Mean(c) = 1015 - 949 = $66Population standard deviation of…
Q: One study claimed that 86% of college students identify themselves as procrastinators. A professor…
A:
Q: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. In 1994, the average…
A: We have to find type of test ..
Q: Test the claim that the proportion of men who own cats is significantly different than 50% at the…
A: given data claim : p ≠ 0.5n = 200p^ = 0.49α = 0.02
Q: Test the claim that the proportion of men who own cats is smaller than 47% at the .025 significance…
A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…
Q: est the claim that the proportion of men who own cats is significantly different than 30% at the 0.1…
A: Given that Claim : The proportion of men who own cats is significantly different than 30%…
Q: reviously, 5.5% of workers had a travel time to work of more than 60 minutes. An urban economist…
A:
Q: Test the claim that the proportion of people who own cats is significantly different than 70% at the…
A: It is given that Sample size n = 400 Sample proportion p̂ = 0.79 Level of significance = 0.02
Q: Test the claim that the proportion of men who own cats is smaller than 60% at the .05 significance…
A: The question is about hypothesis testing.Given :No. of people in the sample ( n ) = 55Sample…
Q: A manufacturer claims him market share is 60%.However a random sample of 500 clients show that only…
A: The objective of this question is to test the manufacturer's claim that his market share is 60%…
Q: Test the claim that the proportion of people who own cats is smaller than 20% at the 0.10…
A: Test the claim that the proportion of people who own cats is smaller than 20% at the 0.10…
Q: Test the claim that the proportion of men who own cats is smaller than the proportion of women who…
A: Consider that pM, pF is the true proportions of men (1st population) and women (2nd population) who…
Q: Test the claim that the proportion of men who own dogs is smaller than the proportion of women who…
A: From the provided information, The claim is that the proportion of men who own dogs is smaller than…
Q: Test the claim that the proportion of people who own cats is smaller than 60% at the 0.005…
A: Introduction: Denote p as the true proportion of people who owned cats.
Q: A survey was conducted to investigate the relationship between gender (male and females) and sector…
A: We have to define null and alternative hypothesis for chi square test of independence.
Q: Test the claim that the proportion of people who own cats is larger than 70% at the 0.10…
A: we have given that the sample size (N)=400 , population proportion (p) =0.70 and sample…
Q: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. At one school, the…
A: solution:- from given information hypothesis test: the average amount of time spent watching…
Q: According to a recent report, 47% of college student internships are unpaid. A recent survey of 80…
A: given data n = 80 x = 45 claim : p ≠ 0.47
Q: Test the claim that the proportion of men who own cats is smaller than 48% at the .10 significance…
A: Solution: The claim is that the proportion of men who own cats is smaller than 48%.
Q: A researcher wants to know whether athletic men are more flexible than nonathletic men. For this…
A: The given sample size for athletic men is 50, sample mean is 4.3, sample standard deviation is 2.1,…
Q: Test the claim that the proportion of men who own cats is smaller than 48% at the .10 significance…
A: From the provided information, Sample size (n) = 20 50% owns cat that is sample proportion (p̂) =…
Q: Test the claim that the proportion of men who own cats is smaller than 70% at the .05 significance…
A: Let we define, p be the proportion of men who owned cats. Here we need to test claim that whether p…
Q: An exercise science student believes that during professional rugby games the average distance…
A: Provided that : When reviewing game statistics the student found that the average distance covered…
Q: At the .01 significance level, does the data below show significant correlation? x y5 306…
A: The objective of this question is to determine whether there is a significant correlation between…
Q: Test the claim that the proportion of men who own cats is larger than 30% at the .10 significance…
A:
Q: A manufacturer claims him market share is 60%. However a random sample of 500 clients show that only…
A: X=275, n=500, p=60%, level of signicance=1%
Q: Test the claim that the proportion of men who own cats is significantly different than 40% at the…
A: Given, Sample size = 25 Sample proportion = 0.32
Q: Test the claim that the proportion of people who own cats is significantly different than 90% at the…
A: Given, Sample size = 100 Sample proportion = 0.83 Under the claim, the null and alternative…
Q: A study of 17 worldwide financial institutions showed the correlation between their assets and…
A:
Q: Test the claim that the proportion of people who own cats is significantly different than 50% at the…
A: Null and Alternate Hypothesis: H0: p=0.5 H1: p≠0.5 The test is two tailed
Q: Test the claim that the proportion of people who own cats is significantly different than 30% at the…
A: Z= p^-pp(1-p)n
Q: Test the claim that the proportion of people who own cats is significantly different than 10% at the…
A: Denote p as the true proportion of people, who own cats.
Q: A nutrition expert claims that the average American is overweight: To test his claim, a random…
A: A. Consider μ is the population average difference of actual weight and ideal weight.
Q: adults whether they believed that people should pay sales tax on items purchased over the internet.…
A: Let n denote the number of U.S. adults whether they believed that people should pay sales tax on…
Q: Samples of pages were randomly selected from three different novels. The Flesch Reading Ease scores…
A: The level of significance is 0.01.
Step by step
Solved in 2 steps with 1 images
- Test the claim that the proportion of men who own cats is significantly different than 70% at the 0.1 significance level.The null and alternative hypothesis would be: a.) H0:p=0.7H0:p=0.7H1:p≠0.7H1:p≠0.7 b.)H0:μ=0.7H0:μ=0.7H1:μ>0.7H1:μ>0.7 C.) H0:μ=0.7H0:μ=0.7H1:μ<0.7H1:μ<0.7 D.) H0:μ=0.7H0:μ=0.7H1:μ≠0.7H1:μ≠0.7 E.) H0:p=0.7H0:p=0.7H1:p>0.7H1:p>0.7 F.) H0:p=0.7H0:p=0.7H1:p<0.7H1:p<0.7 The test is: A.)two-tailed B.)right-tailed C.)left-tailed Based on a sample of 30 people, 61% owned catsThe test statistic is: (to 2 decimals) = The positive critical value is: (to 2 decimals)=Based on this we: a.)Fail to reject the null hypothesis B.)Reject the null hypothesisTest the claim that the proportion of men who own cats is significantly different than 35% at the 0.2 significance level.The null and alternative hypothesis would be: H0:μ=H0:μ=H1:μ<H1:μ<H0:p=0.35H0:p=0.35H1:p≠0.35H1:p≠0.35 H0:μ=H0:μ=H1:μ≠H1:μ≠H0:μ=H0:μ=H1:μ>H1:μ>H0:p=0.35H0:p=0.35H1:p<0.35H1:p<0.35H0:p=0.35H0:p=0.35H1:p>0.35H1:p>0.35 The test is: right-tailed left-tailed two-tailed Based on a sample of 55 men, 255255 of the men owned catsThe test statistic is: z=z=___?___ (to 2 decimals)The positive critical value is zC=zC=1.28155.With the null hypothesis that a suspect is innocent, an investigation concluded that the suspect should not be convicted at 5% level of significance. The conclusion would be the same if tested at 1% level of significance. Select one: True False
- Test the claim that the proportion of men who own cats is significantly different than 80% at the 0.01 significance level.The null and alternative hypothesis would be: H0:μ=0.8H0:μ=0.8H1:μ>0.8H1:μ>0.8 H0:μ=0.8H0:μ=0.8H1:μ≠0.8H1:μ≠0.8 H0:p=0.8H0:p=0.8H1:p<0.8H1:p<0.8 H0:μ=0.8H0:μ=0.8H1:μ<0.8H1:μ<0.8 H0:p=0.8H0:p=0.8H1:p>0.8H1:p>0.8 H0:p=0.8H0:p=0.8H1:p≠0.8H1:p≠0.8 The test is: two-tailed left-tailed right-tailed Based on a sample of 35 people, 76% owned catsThe test statistic is: (to 2 decimals)The positive critical value is: (to 2 decimals)Based on this we: Reject the null hypothesis Fail to reject the null hypothesisA new shampoo is being test-marketed. A large number of 16 ounce bottles were mailed out at random to potential customers in the hope that the customers will retuen an enclosed questionnaire. Out of tbe 1500 returned questionnaires, 975 indicated that they like the shampoo and will consider buying ir when it becomes available on the market. Perform a hypothesis to determine if the proportion of potential customers is at most 65 percent. Use a level of significance of 0.05.Z?
- Test the claim that the proportion of people who own cats is significantly different than 80% at the 0.1 significance level.The null and alternative hypothesis would be: H0:μ=0.8H0:μ=0.8H1:μ≠0.8H1:μ≠0.8 H0:p=0.8H0:p=0.8H1:p≠0.8H1:p≠0.8 H0:p≤0.8H0:p≤0.8H1:p>0.8H1:p>0.8 H0:p≥0.8H0:p≥0.8H1:p<0.8H1:p<0.8 H0:μ≤0.8H0:μ≤0.8H1:μ>0.8H1:μ>0.8 H0:μ≥0.8H0:μ≥0.8H1:μ<0.8H1:μ<0.8 The test is: right-tailed left-tailed two-tailed Based on a sample of 200 people, 87% owned catsThe p-value is: (to 2 decimals)Based on this we: Reject the null hypothesis Fail to reject the null hypothesisThe coach of a very popular men’s basketball team claims that the average distance the fans travel to the campus to watch a game is 35 miles. The team members feel otherwise. A sample of 16 fans who travel to games was randomly selected and yielded a mean of M= 36 miles and s= 5 miles. Test the coach’s claim at the 5% (.05) level of significance. one-tailed or two-tailed test: State the hypotheses: df= tα or t value for the critical region = sM = t (test statistic)= Decision:Test the claim that the proportion of men who own cats is smaller than 40% at the .005 significance level. The null and alternative hypothesis would be:
- When three groups were compared using the one-way Analysis of Variance (ANOVA), the result turned out to be significant, that is, the null hypothesis was rejected. What will be the appropriate interpretation of this result?A. All three groups significantly differ in means.B. Exactly two of the three groups significantly differ.C. At least two of the three groups significantly differ in means.D. All three groups have the same effect on the dependent variable.A national organization that conducts research on the cost and quality of health care in the U.S. reported that, in 2012, U.S. families spent an average of $9,590 on health care expenses. Suppose you decide to test whetherthe average in 2015 is greater than the average in 2012. After conducting the appropriate statistical test, you find a P-value of 0.022. If the level of significance is 0.05, which of the following is the best interpretation of the P-value? a. The P-value of 0.022 indicates that there is a 2.2% chance that the 2015 average is greater than the average amount spent in 2012.b. The P-value of 0.022 provides weak evidence that the average in 2015 average is greater than the average amount spent in 2012.c. The P-value of 0.022 provides strong evidence that the 2015 average is greater than the average amount spent in 2012.d. The P-value of 0.022 indicates that there is a very low probability that the 2015 average is different than average amount spent in 2012.Test the claim that the proportion of people who own cats is significantly different than 80% at the 0.2 significance level. The null and alternative hypothesis would be: Ho: p= 0.8 Ho: ≤ 0.8 Hop: 0.8 Ho:p> 0.8 Ho: 0.8 Ho:p 0.8 H₁:µ 0.8 H₁:p 0.8 The test is: right-tailed two-tailed left-tailed = Based on a sample of 300 people, 82% owned cats The p-value is: (to 2 decimals)