Using the class data set, test the claim that the true proportion of blue m&m candies is 0.24 at the 0.05 confidence significance level. Null? Hypothesis?

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不 Use the sample data and confidence level given below to complete parts (a) through (d). In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2650 subjects randomly selected from an online group involved with ears. 1067 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) b) Identify the value of the margin of error E. A

Create an Excel spreadsheet. Conduct an independent sample t-test evaluating if cat owners or dog owners love their pet more. Ratings for cat owners- 7,6,5,9,5 Ratings for dog owners- 8,7,9,10 Write APA formatted results for thus analysis, including Cohen's d for the results and a bar graph with Error Bars showing 95 percent confidence intervals.

Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent." The ratings were obtained at one university in a state. Construct a confidence interval using a 99​% confidence level. What does the confidence interval tell about the population of all college students in the​ state? Ratings3.92.84.34.73.03.93.54.74.44.04.03.53.24.23.6

A real estate agent wants to know if tax assessors and real estate appraisers closely agree on the values of homes. A random sample of the two independent groups evaluated 12 homes. The data is given below.   Tax Assessors Real Estate Appraisers x̄1 = $102,344 x̄2 = $105,827 s1 = $3,952 s2 = $4,341 n1 = 12 n2 = 12   Construct a confidence interval for the mean difference in the home values for each group. A real estate agent wants to know if tax assessors and real estate appraisers closely agree on the values of homes. A random sample of the two independent groups evaluated 12 homes. The data is given below.   Tax Assessors Real Estate Appraisers x̄1 = $102,344 x̄2 = $105,827 s1 = $3,952 s2 = $4,341 n1 = 12 n2 = 12   Construct a confidence interval for the mean difference in the home values for each group.  (-6999, 33.302)  (-6998, 31.516)  (-8264, 1297.8)  (-6804, -161.5)

Online News In a Harris poll of 2036 adults, 40% said that they prefer to get their news online. Construct a 95% confidence interval estimate of the percentage of all adults who say that they prefer to get their news online. Can we safely say that fewer than 50% of adults prefer to get their news online?