At the 0.025 significance level, test the claim that the four brands have the same mean if the following sample results have been obtained. Brand A Brand B Brand C Brand D 17 18 21 22 20 18 24 25 21 23 25 27 22 25 26 29 21 26 29 35 29 36 37 What is the p-value? [pvalue] round to 4 decimal places Do the means appear to be the same? [conclusion] yes or no

In studying the occurrence of genetic characteristics, the following sample data were obtained. The authors of the study expected each characteristic to occur with the same frequency.  At the 0.05 significance level, test the claim that the characteristics occur with the same frequency.  Characteristic A B C D E F Frequency 28 30 45 48 38 39  What is the test statistic?  [test] (round to 3 decimal places) What is the p-value? [pvalue] (round to 4 decimal places) What is your conclusion regarding the claim that the characteristics occur with equal frequency? [concl] Type r for reject Type s for support Type f for fail to reject Type n for not enough evidence to support

Calculate the z-score for each test.  Round your answers to 2 decimal places. Test A:  A score of 82 on a test with a mean of 70 and a standard deviation of 8. [one] Test B:  A score of 82 on a test with a mean of 75 and a standard deviation of 4. [two] Based on the z scores, which test score is better?  [better]

Use the given values of n and p to find the maximum usual value μ + 2σ for a binomial distribution. Round your answer to one decimal place. n = 246, p = 0.15

The table below shows the soft drinks preferences of people in three age groups. cola root beer lemon-lime Under 21 years 40 25 20 between 21 and 40 35 20 30 over 40 years 20 30 35 If one of the 255 subjects is randomly selected, find the probability that the person is over 40 years of age.  Round your answer to 3 decimal places.  

A researcher was interested in comparing the resting pulse rates of people who exercise regularly and the pulse rates of those who do not exercise regularly. Independent simple random samples of 16 people who do not exercise regularly and 12 people who exercise regularly were selected, and the resting pulse rates (in beats per minute) were recorded. The summary statistics are as follows. Use a 0.025 significance level to test the claim that the mean resting pulse rate of people who do not exercise regularly is greater than the mean resting pulse rate of people who exercise regularly.

What will be the output of the code below? import copyx = [[“bananas”, “bread”], [“milk”, “eggs”]]y = xz = copy.deepcopy(y)y[1] = [“yogurt”, “cheese”]z[0][1] = “cheries”print(x)

Assume file1.txt exists and the following code reads file1.txt and copies its content to file2.txt path1 = “file1.txt”path2 = “file2.txt”f = open(???, ‘r’, encoding=”utf-8″)text = f.read()f.close()f = open(???, ???, encoding=”utf-8”)???f.close() Which group of code snippet(s) could replace the ???’s in order to accomplish copying the content of file1.txt to file2.txt?

Consider a dataframe df with information of employees, including name, phone, email. An employee is missing if their name is missing, and  if their phone or email is missing. How can we find how many employees are missing?

Assume you want to parse the html code from the course office hours page  “https://cs220.cs.wisc.edu/sum25/office_hours.html” and will respond to requests by returning an HTML file. Which of the options below could replace the ??? in the code to successfully save the HTML code to a file on the user’s machine? import requestsfrom bs4 import BeautifulSoupdef download(url):    try:        r = requests.get(url)       f = open(“office_hours.html”, “w”, encoding=”utf-8″)       f.write(???)        print(“Success!”)    except requests.HTTPError:        print(“Error!”)download(“https://cs220.cs.wisc.edu/sum25/office_hours.html”)