Question

At Istanbul University, department of Communication and Design, it is claimed that the cost for a...

At Istanbul University, department of Communication and Design, it is claimed that the cost for a short film assignment follows a normal distribution with mean μ=500 TL. Test the population mean at 1% significance level if the sample average is 550 TL and sample standard deviation is 114.1TL for a randomly selected 16 students.

A) What is Null hypothesis?

B) What is Null hypothesis?

C) What is Test statistic (use 3 digits after decimal point)?

D) What is Critical Value of the test at α=1% is (use 3 digits after decimal point)?

E) Does it appear at α=1% that population mean is more than 500 TL?

F) For what values of α H0 can be rejected? (%)

G) For what values of Xbar H0 can be rejected?(use 2 digits after decimal point)

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
URGENT PLEASE!!! At Bilkent University, department of Communication and Design, it is claimed that the cost...
URGENT PLEASE!!! At Bilkent University, department of Communication and Design, it is claimed that the cost for a short film assignment follows a normal distribution with mean μ=500 TL and a standard deviation of σ=100TL. Test the population mean at 1% significance level if the sample average is 550 TL for a randomly selected 16 students. a) Null hypothesis is Answer b) Alternative Hypothesis is  Answer e) Does it appear at α=5% that population mean is more than 500 TL? Answer...
URGENT. The Turkish Water Works Association reports that the per capita water use in a single-family...
URGENT. The Turkish Water Works Association reports that the per capita water use in a single-family home followed a normal distribution with mean µ=64 liters and standard deviation σ=9.4 liters per day. Mesa Mozaik is a relatively new housing development. The builders installed more efficient water fixtures, such as low-flush toilets, and subsequently conducted a survey of the residences. Twenty-nine owners responded, and the sample mean water use per day was 60 liters. At the 0.01 level of significance, is...
A management consultant found that the amount of time per day spent by executives performing tasks...
A management consultant found that the amount of time per day spent by executives performing tasks that could equally well be done by subordinates followed a normal distribution with mean µ=144 minutes and standard deviation of σ=60 minutes. Test the population mean at 2% significance level if the sample average is 166.5 minutes for a randomly selected 16 executives. a) Null hypothesis is AnswerHo: µ>144Ho: µ<144Ho: µ≥144Ho: µ≤144 b) Alternative Hypothesis is AnswerHA: µ<144HA: µ>144HA: µ≥144HA: µ≤144 c) Test statistic...
1. In testing a null hypothesis H0 versus an alternative Ha, H0 is ALWAYS rejected if...
1. In testing a null hypothesis H0 versus an alternative Ha, H0 is ALWAYS rejected if A. at least one sample observation falls in the non-rejection region. B. the test statistic value is less than the critical value. C. p-value ≥ α where α is the level of significance. 1 D. p-value < α where α is the level of significance. 2. In testing a null hypothesis H0 : µ = 0 vs H0 : µ > 0, suppose Z...
The psychology department of Bahçeşehir University conducted an investigation to determine how long it takes for...
The psychology department of Bahçeşehir University conducted an investigation to determine how long it takes for a woman or man to get married after their graduation in Istanbul. Two independent random samples were selected and the following summary information concerning times to completion of university were computed. Sample Size Sample Mean Population Variance Men Women 100 85 8.8 8.4 1.96 2.25 a) State the appropriate null and alternative hypotheses to determine whether there is a significant difference in time to...
A shareholders' group is lodging a protest against your company. The shareholders group claimed that the...
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 10 years. A survey of 120 companies reported in The Wall Street Journal found a sample mean tenure of 9.3 years for CEOs with a standard deviation of s = 5.3 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is normally distributed....
When σ (population standard deviation) is unknown [Critical Value Approach] The value of the test statistic...
When σ (population standard deviation) is unknown [Critical Value Approach] The value of the test statistic t for the sample mean is computed as follows:       t =   with degrees of freedom d.f. = n – 1 where n is the sample size, µ is the mean of the null hypothesis, H0, and s is the standard deviation of the sample.       t is in the rejection zone: Reject the null hypothesis, H0       t is not in the rejection...
A shareholders' group is lodging a protest against your company. The shareholders group claimed that the...
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 9 years. A survey of 89 companies reported in The Wall Street Journal found a sample mean tenure of 8.2 years for CEOs with a standard deviation of s = s = 4.1 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is...
A shareholders' group is lodging a protest against your company. The shareholders group claimed that the...
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 10 years. A survey of 64 companies reported in The Wall Street Journal found a sample mean tenure of 9.4 years for CEOs with a standard deviation of s = s= 5.1 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is normally...
A shareholders' group is lodging a protest against your company. The shareholders group claimed that the...
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 85 companies reported in The Wall Street Journal found a sample mean tenure of 10.3 years for CEOs with a standard deviation of s = 5 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is normally distributed....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT