The table shows the number of one doctor's patients who caught a cold one week and whether or not they exercised regularly. (a) Find P(did not exercise | did not catch a cold). (b) Find P(did not catch a cold | did not exercise).

8s

In a survey, 33% of the respondents stated that they talk to their pets on the telephone. A veterinarian believed this result to be too high, so she randomly selected 210 pet owners and discovered that 66 of them spoke to their pet on the telephone. Does the veterinarian have a right to be skeptical? Use the a=0.01 level of significance. Because npo (1-Po) = satisfied. (Round to one decimal place as needed.) What are the null and alternative hypotheses? 10, the sample size is Ho versus H₁: (Type integers or decimals. Do not round.) Find the test statistic, Zo- Zo = (Round to two decimal places as needed.) Find the P-value 5% of the population size, and the sample the requirements for testing the hypothesis P-value = (Round to three decimal places as needed.) Does the veterinarian have a right to be skeptical? OA. The veterinarian has a right to be skeptical. There is sufficient evidence to conclude that the true proportion of pet owners who talk to their pets on the telephone is less…

The police department wanted to know if 911 calls came in more often on some days of the weekend. They recorded the number of calls received on Friday, Saturday, and Sunday: Friday Saturday Sunday 179 196 130 Use a 0.01 level of significance to test the claim that calls are not equally likely on Friday, Saturday, and Sunday during February. What is the test statistic? TT T Arial T- : ABC 3 (12pt) II

Plzzz explain.

Last year, 46% of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indicates that 35% plan to provide a holiday gift to their employees. Suppose the survey results are based on a sample of 80 business owners. (a) How many business owners in the survey plan to provide a holiday gift to their employees this year?  business owners (b) Suppose the business owners in the sample did as they plan. Compute the p-value for a hypothesis test that can be used to determine if the proportion of business owners providing holiday gifts has decreased from last year. Find the value of the test statistic. (Round your answer to two decimal places.)   Find the p-value. (Round your answer to four decimal places.) p-value =  (c) Using a 0.05 level of significance, would you conclude that the proportion of business owners providing gifts decreased? Do not reject H0. There is insufficient evidence to conclude that the proportion of business…

When testing whether or not B1 = 0, why is the F test a one-sided test even though Ha includes both B1, < 0 and B1, > O?

Last year, 43% of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indicates that 30% plan to provide a holiday gift to their employees. Suppose the survey results are based on a sample of 60 business owners. (a) How many business owners in the survey plan to provide a holiday gift to their employees this year? business owners (b) Suppose the business owners in the sample did as they plan. Compute the p-value for a hypothesis test that can be used to determine if the proportion of business owners providing holiday gifts has decreased from last year. Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = (c) Using a 0.05 level of significance, would you conclude that the proportion of business owners providing gifts decreased? O Do not reject Ho. There is sufficient evidence to conclude that the proportion of business owners providing…

8) Each of 49 subjects tastes two unmarked cups of coffee and says which he or she prefers. One cup in each pair contains instant coffee, the other fresh-brewed coffee. 30 of the subjects prefer the fresh-brewed coffee. Take p to be the proportion of the population who would prefer fresh-brewed coffee in a blind tasting. Test the claim that a majority of people prefer the taste of fresh-brewed coffee.(a) H0: p = ?   and Ha: p >  ?(b) What is the test statistic? (Use 2 decimal places)(c) What is the p-value? (Use 4 decimal places)

Last year, 54% of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indicates that 40% plan to provide a holiday gift to their employees. Suppose the survey results are based on a sample of 60 business owners. (a) How many business owners in the survey plan to provide a holiday gift to their employees this year? business owners (b) Suppose the business owners in the sample did as they plan. Compute the p-value for a hypothesis test that can be used to determine if the proportion of business owners providing holiday gifts has decreased from last year. Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = (c) Using a 0.05 level of significance, would you conclude that the proportion of business owners providing gifts decreased? Reject Ho. There is insufficient evidence to conclude that the proportion of business owners providing holiday…