In an article issued by a nutrition magazine, the recommended Vitamin C intakeper day for Filipino female adolescents ages 14 to 18 years old is 75 grams. Aresearcher conducted a survey in Baguio City and selected 25 respondents andmeasured their daily Vitamin C intakes. If the group consumed an average of81 grams per day with a standard deviation of 10 grams per day, is it valid to concludeat 0.05 level of significance, that the female adolescent of this age group from thisCity consume more than Vitamin C per day than the recommended consumption?Determine the test distribution to use, and the type of test.A) t-distribution / left tailed testz-test / right tailed test(c)two-tailed test(Dt-distribution / right tailed test

Answered: Image /qna-images/answer/64af912f-884e-4b1b-8d41-4a2fba503520.jpg

Answered: In an article issued by a nutrition…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A student at a four-year college claims that mean enrollment at four-year colleges is higher than at two- year colleges in the United States. Two surveys are conducted. Of the 35 four-year colleges surveyed, the mean enrollment was 5,782 with a standard deviation of 595. Of the 35 two-year colleges surveyed, the mean enrollment was 4,401 with a standard deviation of 636. Test the student's claim at the 0.1 significance level. Preliminary: a. Is it safe to assume that nAvr 5% of all students enrolled at a 4-year college in the Unites States and n2yr 5% of all enrolled at a 2-year college in the Unites States? O No O Yes b. Is nAyr 2 30 and n2yr 2 30? O No O Yes Test the claim: a. Determine the null and alternative hypotheses. Ho: Hayr? V 2yr Ha: HAyrl 2yr b. Determine the test statistic. Round to four decimal places. t = c. Find the p-value. Round to 4 decimals. P-value = d. Make a decision. O Fail to reject the null hypothesis. O Reject the null hypothesis. e. Write the conclusion. O…
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 29 students, and the distribution of total study hours per week is bell-shaped with a mean of 14 hours and a standard deviation of 2.7 hours.Use the Empirical Rule to answer the following questions.a) 68% of the students spend between hours and hours on Statistics each week.b) 95% of the students spend between hours and hours on Statistics each week.c) 99.7% of the students spend between hours and hours on Statistics each week.
A survey found that women's heights are normally distributed with mean 63.3 in. and standard deviation 2.9 in. The survey also found that men's heights are normally distributed with mean 69.7 in. and standard deviation 3.6 in. Most of the live characters employed at an amusement park have height requirements of a minimum of 55 in. and a maximum of 64 in. What's the percentage of men meeting the height requirement. What does the result suggest about the genders of the people who are employed as characters at the amusement park?
7) A tire manufacturer has been producing tires with an average life expectancy of 26,000 miles. Now the company is advertising that their new tires' life expectancy has increased. In order to test the legitimacy of their advertising campaign, an independent testing agency tested a sample of 85 of their tires. The agency found the mean of the 85 tires to be 27,000 miles and the standard deviation to be 3,970 miles. Use a 0.01 level of significance and test to determine whether the company is using legitimate advertising. (Show all seven steps.)
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 22 students, and the distribution of total study hours per week is bell-shaped with a mean of 12 hours and a standard deviation of 2.6 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and hours on Statistics each week. c) 99.7% of the students spend between hours and hours on Statistics each week. Check Answer 100% 69°F Cloudy
An ordinary traveler claims that the average difference between the plane fares of all trips from the Philippines to a certain destination in the two airlines is significantly different. To validate this claim, 145 trips have been randomly selected from the first airline, which gave a mean fare of PHP 23,502.71 with a sample standard deviation of PHP 4,853.39. On the other hand, 123 trips are chosen at random from the second airline, which provided a mean fare of PHP 21,884.09 with a sample standard deviation of PHP 4,987.73. Assume that the populations are normally distributed, and the standard deviations for both populations are equal. At ? = 0.01, indicate whether or not there is sufficient evidence to support the traveler’s claim
Suppose two food preservatives are extensively tested and determined safe for use in meats. A processor wants to compare the preservatives for their effects on retarding spoilage. Suppose 16 cuts of fresh meat are treated with preservative A with mean 95.25 and Sample standard deviation 13.45. And another 12 cuts of meat are treated with preservative B with mean 100.50 and standard deviation 10.55. The number of hours until spoilage begins is recorded for each of the 28 cuts of meat. The value of the test statistic for determining if there is a difference in the population variances for preservatives A and B is equal to: A. 1.129. OB. 1.275. OC. 1.625. OD. 0.784.
According to researchers, the mean length of imprisonment for motor-vehicle-theft offenders in a nation is 16.5 months. One hundred randomly selected motor-vehicle-theft offenders in a city in the nation had a mean length of imprisonment of 17.6 months. At the 10% significance level, do the data provide sufficient evidence to conclude that the mean length of imprisonment for motor-vehicle-theft offenders in the city differs from the national mean? Assume that the population standard deviation of the lengths of imprisonment for motor-vehicle-theft offenders in the city is 6.0 months. Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. Ho: H (Type integers or decimals. Do not round.) The test statistic is z = (Round to two decimal places as needed.) Identify the critical value(s). Select the correct choice below and fill in the answer box within your choice. (Round to two decimal…
According to the American Freshman, the number of hours that college freshmen spendstudying each week is normally distributed with a mean of 7 hours and a standard deviationof 5.3 hours.a) What percent of college freshmen study between 7 and 12.3 hours per week?b) What percent of college freshmen study more than 17.6 hours per week?
According to official data, the average annual expenditure on dental care in Kingston, Jamaica is at least $60,000 per person. A random sample of 64 persons showed that they spent an average of $55,000 on dental care last year with a standard deviation of $10,350. Test at the 5% significance level whether last year’s mean annual dental care expenditure per person in the parish was less than $60,000. c) find value of test statistic.
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 30 students, and the distribution of total study hours per week is bell-shaped with a mean of 14 hours and a standard deviation of 2.7 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and hours on Statistics each week. c) 99.7% of the students spend between hours and hours on Statistics each week.

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