Question

In: Statistics and Probability

A company that makes shampoo wants to test whether the average amount of shampoo per bottle...

A company that makes shampoo wants to test whether the average amount of shampoo per bottle is 17 ounces. The standard deviation is known to be 0.20 ounces. Assuming that the hypothesis test is to be performed using 0.10 level of significance and a random sample of n = 64 bottles has a mean of 17.02, which of the following would be the correct formulation of the null and alternative hypotheses and what is the value of the test statistic?

Solutions

Expert Solution

Solution:-


Related Solutions

Janet wants to know if a bottle of follicle shampoo contains more than 873.3 ml at...
Janet wants to know if a bottle of follicle shampoo contains more than 873.3 ml at the 5%level of significance. She samples twenty-three bottles and computes a mean of 875.1 ml and standard deviation of 5.32 ml.
A credit card company wants to test whether, on average, male customers make larger payments on...
A credit card company wants to test whether, on average, male customers make larger payments on their outstanding credit balance each month compared to female customers. Random, independent samples of 20 males and 20 females are selected and monthly payments are compared. Average payment from males = $129.00 with a sample standard deviation of $23.90, and average payments from females = $113.00 with a sample standard deviation of $21.60 (both sigmas unknown). a. Write out Ho and Ha to test...
1. In order to test the claim that average amount spent for lunch per day by...
1. In order to test the claim that average amount spent for lunch per day by MSU students is not $ 7.25. A random sample of 40 students is taken. After calculating sample mean and standard deviation p- value is found to be 0.0482. Which one of the following statement is correct. Question 6 options: Reject H0 at 95% confidence level Reject H0 at 99% confidence level Reject H0 at 98% confidence level Reject H0 at 96% confidence level 2....
A company that makes cola drinks states that the mean caffeine content per​ 12-ounce bottle of...
A company that makes cola drinks states that the mean caffeine content per​ 12-ounce bottle of cola is 35 milligrams. You want to test this claim. During your​ tests, you find that a random sample of thirty​ 12-ounce bottles of cola has a mean caffeine content of 35.7 milligrams. Assume the population is normally distributed and the population standard deviation is 7.4 milligrams. At α=0.01​, can you reject the​ company's claim? Complete parts​ (a) through​ (e). ​(a) Identify H0 and...
A company that makes cola drinks states that the mean caffeine content per​ 12-ounce bottle of...
A company that makes cola drinks states that the mean caffeine content per​ 12-ounce bottle of cola is 55 milligrams. You want to test this claim. During your​ tests, you find that a random sample of thirty​ 12-ounce bottles of cola has a mean caffeine content of 53.4 milligrams. Assume the population is normally distributed and the population standard deviation is 7.2 milligrams. At alphaequals0.02​, can you reject the​ company's claim? Complete parts​ (a) through​ (e). ​(a) Identify Upper H...
A company that makes cola drinks states that the mean caffeine content per​ 12-ounce bottle of...
A company that makes cola drinks states that the mean caffeine content per​ 12-ounce bottle of cola is 55 milligrams. You want to test this claim. During your​ tests, you find that a random sample of thirty​ 12-ounce bottles of cola has a mean caffeine content of 54.2 milligrams. Assume the population is normally distributed and the population standard deviation is 6.8 milligrams. At α=0.02 can you reject the​ company's claim? Complete parts​ (a) through​ (e). ​(a) Identify Ho and...
A scooter company wants to determine the average amount of time it takes an adult to...
A scooter company wants to determine the average amount of time it takes an adult to assemble an “easy to assemble” scooter. A sample of 49 times yielded an average time of 18.15 minutes. Assume that the assembly times are normally distributed and the population has a standard deviation of 5.39 minutes. a) Give a point estimate for the population mean that the sample of data is taken from. b) Find the 96% confidence interval for the mean assembly time.
Test whether the sample evidence indicates that the average time an employee stays with a company...
Test whether the sample evidence indicates that the average time an employee stays with a company in their current positions is less than 3 years when a random sample of 64 employees yielded a mean of 2.765 years and s = 0.8. Use a = 0.01. Assume normal distribution.
If the average American makes $54,360 per year, and the average person from India makes $5,758...
If the average American makes $54,360 per year, and the average person from India makes $5,758 per year, is it fair to say that an Indian who makes $5,758 per year has everything an American has who makes $54,360 per year, and lives just as well? Why or why not?
Equivalent Units Calculations—Weighted Average Method Ferris Corporation makes a powdered rug shampoo in two sequential departments,...
Equivalent Units Calculations—Weighted Average Method Ferris Corporation makes a powdered rug shampoo in two sequential departments, Compounding and Drying. Materials are added at the beginning of the process in the Compounding Department. Conversion costs are added evenly throughout each process. Ferris uses the weighted average method of process costing. In the Compounding Department, beginning work in process was 12,000 pounds (70% processed), 111,000 pounds were started in process, 108,000 pounds transferred out, and ending work in process was 70% processed....
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT