What is the p-value for this test? 0.0254 0.0978 2.33 38.096 0.0127

Low-fat or low-carb? Are low-fat diets or low-carb diets more effective for weight loss? A sample of 77 subjects went on a low-carbohydrate diet for six months. At the end of that time, the sample mean weight loss was 4.4 kilograms with a sample standard deviation of 7.3 kilograms. A second sample of 81 subjects went on a low-fat diet. Their sample mean weight loss was 2.7 kilograms with a standard deviation of 5.8 kilograms

Cholesterol is a fatty substance that is an important part of the outer lining (membrane) of cells in the body of animals. Its normal range for an adult is 120-240 mg/dl. The Food and Nutrition Institute of the Philippines found that the total cholesterol level for Filipino adults has a mean of 159.2 mg/dl and 83.89% of adults have a cholesterol level below 200 mg/dl. a. Determine the standard deviation of this distribution. Ans = Blank 1 mg/dl b. What is the value of the cholesterol level that exceeds 99% of the population? Ans = Blank 2 mg/dl Blank 1 Add your answer Blank 2 Add your answer

O A myopenmath.com Home - ATI Testing МyOpenMath A shareholders' group is lodging a protest against your company. The shareholders group claimed that the mean tenure for a chief exective office (CEO) was at least 11 years. A survey of 94 companies reported in The Wall Street Journal found a sample mean tenure of 9.5 years for CEOs with a standard deviation of 4 years (The Wall Street Journal, January 2, 2007). You want to formulate and test a hypothesis that can be used to challenge the validity of the claim made by the group, at a significance level of 0.05. Your hypotheses are: H0: μ >11 Ні:д < 11 What is the test statistic for this sample? (Report answer accurate to 3 decimal places.) What is the p-value for this sample? (Report answer accurate to 4 decimal places.) This test statistic leads to a decision to O reject the null O accept the null O fail to reject the null As such, the final conclusion is that there is sufficient evidence to conclude that the population mean tenure for…

York Manufacturing Inc. offers dental insurance to its employees. A recent study by the human resource director shows the annual cost per employee per year followed the normal distribution, with a mean of 1234 dollars and a standard deviation of 321 dollars. What was the minimum cost for the 8 percent of employees that incurred the highest dental expense?

The height of women ages​ 20-29 is normally​ distributed, with a mean of 64.2 inches. Assume σ=2.8 inches. Are you more likely to randomly select 1 woman with a height less than 64.9 inches or are you more likely to select a sample of 20 women with a mean height less than 64.9 ​inches? Explain.   LOADING... Click the icon to view page 1 of the standard normal table. LOADING... Click the icon to view page 2 of the standard normal table.       What is the probability of randomly selecting 1 woman with a height less than 64.9 ​inches?   enter your response here ​(Round to four decimal places as​ needed.)

In a study examining the relationship between socioeconomic status (SES) and academic achievement among high school students, the researchers collected data on 500 students from varying SES backgrounds. The SES was categorized into low, medium, and high. The academic achievement was measured using GPA scores. The following descriptive statistics were obtained: Mean GPA for low SES students: 2.8 Standard deviation of GPA for low SES students: 0.5 Mean GPA for medium SES students: 3.5 Standard deviation of GPA for medium SES students: 0.3 Mean GPA for high SES students: 4.0 Standard deviation of GPA for high SES students: 0.2 a) Calculate the coefficient of variation for each SES group and interpret the results.

The number of orders received daily by an online vendor of used CDs is normally distributed with mean 290 and standard deviation 20. The company has to hire extra help or pay overtime on those days when the number of orders received is 322 or higher. What percentage of days will the company have to hire extra help or pay overtime? Click the icon to view the standard normal distribution table. ..... The company will have to hire extra help or pay overtime on % of days.

Does the sample size ? affect the standard deviation of all possible samplemeans? Explain your answer.

Cost of Building a Home According to the National Association of Home Builders, the average cost of building a home in the Northeast is $117.91 per square foot. A random sample of 33 new homes indicated that the mean cost was $120.14 and the standard deviation was $16. Can it be concluded that the mean cost differs from $117.91, using the 0.05 level of significance?