Victims of Violence A random survey of 73 women who were victims of violence found that 21 were attacked by relatives. A random survey of 40 men found that 5 were attacked by relatives. At =α0.05 , can it be shown that the percentage of women who were attacked by relatives is greater than the percentage of men who were attacked by relatives? Use p1 for the proportion of women who were attacked by relatives. Use the critical value method with tables and round all intermediate calculations to at least three decimal places.

A 2019 study surveyed Norwegian parents about their children's eating habits and taste sensitivities. We are interested in seeing if there is a relationship between sensitivity to sweetness and emotional overeating. The study reports an F* = 2.72 with df = 2 and dfw = 39. How many levels of 'sensitivity to sweetness' were used in the study? How many subjects participated in the entire study? Add Work

A magazine provided results from a poll of 1500 adults who were asked to identify their favorite pie. Among the 1500 respondents, 13% chose chocolate pie, and the margin of error was given as t4 percentage points. Describe what is meant by the statement that "the margin of error was given as ±4 percentage points." Choose the correct answer below. O A. The statement indicates that the interval 13% + 4% is likely to contain the true population percentage of people that prefer chocolate pie. O B. The statement indicates that the study is 100% - 4% = 96% confident that the true population percentage of people that prefer chocolate pie is 13%. C. The statement indicates that the study is only 4% confident that the true population percentage of people that prefer chocolate pie is exactly 13%. O D. The statement indicates that the true population percentage of people that prefer chocolate pie is in the interval 13% +4%.

Victims of Violence A random survey of 70 women who were victims of violence found that 28 were attacked by relatives. A random survey of 48 men found that 7 were attacked by relatives. At =α0.05 , can it be shown that the percentage of women who were attacked by relatives is different the percentage of men who were attacked by relatives? Use p1 for the proportion of women who were attacked by relatives. Use the critical value method with tables and round all intermediate calculations to at least three decimal places

A sample of patients is tested to determine if they have any hospital borne infections. How large of a sample must be collected to be accurate within 0.01 at the 1% level of significance, if the hospital estimates the true proportion of patients infected is 0.045? p̂ = q̂ = E = Z= n=

Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. TInterval (13.046,22.15) X = 17.598 Sx = 16.01712719 n = 50 Click the icon to view a t distribution table. a. What is the number of degrees of freedom that should be used for finding the critical value t12? df = (Type a whole number.) b. Find the critical value t/2 corresponding to a 95% confidence level. ta12 = %3D (Round to two decimal places as needed.) c. Give a brief general description of the number of degrees of freedom. A. The number of degrees of freedom for a collection of sample data is the total number of sample values. B. The number of degrees of freedom for a collection of sample data is the number of sample values that can vary after certain restrictions have been imposed on all data values. C. The number of degrees of freedom for a collection of sample data is the number of sample values that are determined after certain restrictions…

A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period. Single Policyholders Married Policyholders 721 = 575 n2 = 740 Number making claims = 115 Number making claims = 111 a. Use α = 0.05. Test to determine whether the claim rates differ between single and married male policyholders. z-value p-value We can conclude (to 2 decimals) X (to 4 decimals) that there is the difference between claim rates. b. Provide a 95% confidence interval (to 4 decimals) for the difference between the proportions for the two populations. Enter negative answer as negative number.