Question: Problem#8 (10points). In a random sample of seven computers, the mean repair cost was $110.00, and the standard deviation was $44.50. Assume the population is

Problem#8 (10points). In a random sample of seven computers, the mean repair cost was $110.00, and the standard deviation was $44.50. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence interval for the population mean. Show all your steps. Hint for Problem#8 section 6.2 example 3 page 313. Solution

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

"You research repair costs of computers and find that the population standard deviation is $50. Repeat Exercise 20, using the standard normal distribution with the appropriate calculations for a...

In a random sample of seven computers, the mean repair cost was $110.00 and the standard deviation was $44.50. You are given the sample mean and the sample standard deviation. Assume the population...

You research repair costs of computers and find that the population standard deviation is $50. Repeat Exercise 20, using the standard normal distribution with the appropriate calculations for a...

Answer questions 11-19 ODD ONLY. In Exercises 9-12, construct the indicated confidence interval for the population mean u using (a) a t-distribution. (b) If you had incorrectly used a normal...

Section 6.1 1. When estimating a population parameter from sample statistics, rather than estimating a specific value, what is used? 2. If =12.74=12.74 and x=10.87x=10.87. What is the sampling error?...

Problems 11-12. Repair Costs: Computers. In a random sample ot 20 computers, the mean repair cost was S142_40 and the standard deviation was $33.65. Assume the repair cost is normally distributed....

answer all the following questions Use a normal distribution or a t distribution to construct each confidence interval. Show all work. 1. A random sample of 55 hotel rooms in the Philadelphia, PA...

Help please ame ovide detailed explanation of work (use of table, calculator functions, formula, etc.) for complete credit. 1) In a random sample of 60 computers, the mean repair cost was $150....

In a random sample of 20 computers the mean repair cost was 142.40 and the standard deviation was 33.65 assume the repair cost is normally distributed. A) Use a T distribution to construct a 99%...

When I bump one end of a long metal bar, the other end instantaneously moves. Can I use this to send messages faster than light? Explain in detailed.

1. Real – Vs. – Nominal GDP (65 points) The economy of country X produces 2 goods, bread, and butter. In 2019, 740,000 units of bread was sold at $0.55 each and 650,000 units of butter at...

The inventory turnsover ratio and days sales outstanding ( DSO ) are two ratios that are used to assess how effectively a firm is managing its current assets. True False

The income statement for the Timberline Golf Club Inc. for the month ended July 31 shows Service Revenue $16,000; Salaries and Wages Expense $8,400; Maintenance and Repairs Expense $2,500; and Income...

The required steps in the accounting cycle are listed in random order below. List the steps in proper sequence. (a) Prepare a post-closing trial balance. (b) Prepare an adjusted trial balance. (c)...

In its first year of operations, Lazirko Company earned $28,000 in service revenue, $6,000 of which was on account and still outstanding at year-end. The remaining $22,000 was received in cash from...

In completing the engagement in question 3, Wishne pays no costs in March, $2,500 in April, and $2,200 in May (incurred in April). How much expense should the firm deduct from revenues in the month...

Gross Profit Method Castlevania Company lost most of its inventory in a fire in December just before the year-end physical inventory was taken. The corporations books disclosed the following....

please show step by step detailed calculations 3. Develop a material requirement plan for end item P and its components, given the tree below. Assume that all lead times are one week, and that...

1. What is the meaning of the information we are collecting?

3. How much information do we need to collect?

2. What types of information are we collecting?