Question

Supposed that the z is the test statistics for hypothesis testing, calculate the value of the...

Supposed that the z is the test statistics for hypothesis testing, calculate the value of the z for each of the following. Express your answer in 2 decimal places.

13. µ = 8, σ = 4, n = 100, x̄ = 7.2

Answer:  

14.      µ = 25, σ = 5, n = 90, x̄ = 23.4

Answer:  

15.      µ = 77, σ = 6, n = 150, x̄ = 78.2

Answer:

16.      µ = 8.5, σ = 4, n = 120, x̄ = 7.2

Answer:

17.      µ = 20.8, σ = 4, n = 90, x̄ = 21.2

Answer:

18.      µ = 31.2, σ = 3, n = 77, x̄ = 32

Answer:

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
The statistics on test scores for 4 groups are given below.. Test the hypothesis that the...
The statistics on test scores for 4 groups are given below.. Test the hypothesis that the means for each group are equal. Use a .01 significance level fresh soph jr. sr mean 88 90 78 92 var 120 150 200 250 n 9 9 9 9 NB: Please i will like it to be cleared for someone who is learning it by herself . I saw similar answer online but i cant figure out how they come about the (Sum...
This is the part of Statistics (Confidence Intervals for Proportions and Testing Hypothesis About Proportions) Please...
This is the part of Statistics (Confidence Intervals for Proportions and Testing Hypothesis About Proportions) Please show and answer all the parts of this question. Along with interest rates, life expectancy is a component in pricing financial annuities. Suppose that you know that last year's average life expectancy was 77 years for your annuity holders. Now you want to know if your clients this year have a longer life expectancy, on average, so you randomly sample n=20 of your recently...
1) The value of the z-score that is obtained for a hypothesis test is influenced by...
1) The value of the z-score that is obtained for a hypothesis test is influenced by several factors. Some factors influence the size of the numerator of the z-score and other factors influence the size of the standard error in the denominator. For each of the following, indicate whether the factor influences the numerator or denominator of the z-score and determine whether the effect would be to increase the value of z (farther from zero) or decrease the value of...
1.) What is the critical z value of a two sided test for alpha = .01?...
1.) What is the critical z value of a two sided test for alpha = .01? A.) 2.33 B.) 2.57 C.) 0.004 D.) 0.040 2.) Mocha Joe has n = 23, a sample average of 1,000,000, and a sample standard deviation of 350,000. What t-value should Mocha Joe use for a 95% confidence interval? A.) 1.960 B.) 2.064 C.) 2.069 D.) 2.074 3.) What is the center of a confidence interval? A.) µ B.) s C.) x̄ D.) σ 4.)...
T F 1. A p-value of .008 in hypothesis testing means there is only a .8%...
T F 1. A p-value of .008 in hypothesis testing means there is only a .8% chance we could get such sample statistics from the population if the null hypothesis is as stated. Such an event is considered unlikely and we would reject the null hypothesis. T F 2. As a general rule in hypothesis testing, it is always safer to set up your alternate hypothesis with a greater-than or less-than orientation. _____3. If the level of significance is .02...
STA2023 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question....
STA2023 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Provide an appropriate response. 1) The P-value for a hypothesis test is P = 0.029. Do you reject or fail to reject H0 when the level of significance is ΅ = 0.01? A) reject H0 B) not sufficient information to decide C) fail to reject H0 2) The P-value for a hypothesis test is P = 0.085. Do you reject or fail to reject...
Suppose that a pharmaceutical company is interested in testing their new cholesterol medication and recruited 24...
Suppose that a pharmaceutical company is interested in testing their new cholesterol medication and recruited 24 adults with high blood pressures, where half of them were given the new drug and the other half were given the old drug. Then the reduction in LDL cholesterol level (unit: mg/dL) was measured after 6 months. Summary statistics of the amount of reduction are shown below. NOTE: Not all outputs given above are useful      n           x           s      New Drug    12    32    23 Old...
Create the Descriptive Statistics for "Price" and "SQFT" - Include a 95% Confidence Test on the...
Create the Descriptive Statistics for "Price" and "SQFT" - Include a 95% Confidence Test on the Population Mean Produce a Scatterplot for Price (Dependent) and SQFT (Independent) (PLACE BELOW) Conduct a 95% Hypothesis Test (i.e., ? = .05) to determine if the Mean Price of Houses is greater than $242,512. Use a Population Standard Deviation of $172,000 for your Z-test (i.e., we are determing if the mean has increased from the previous year). Answers From the Scatterplot (placed below), is...
Let’s consinder a mortgage application using HMDA (The Home Mortgage Disclosure Act). Here is a sample...
Let’s consinder a mortgage application using HMDA (The Home Mortgage Disclosure Act). Here is a sample from 30 mortgage applications: ID loanamt income hprice 1 109 63 155 2 185 137 264 3 121 53 128 4 125 78 125 5 119 37 149 6 153 65 171 7 380 188 484 8 100 58 125 9 110 78 158 10 41 31 116.5 11 115 54 128 12 248 117 280 13 126 60 157.5 14 260 192 325...
The positive square root of variance is called: Select one: A. z-score B. mean C. Standard...
The positive square root of variance is called: Select one: A. z-score B. mean C. Standard Deviation D. dispersion QUESTION 12 Not yet answered Marked out of 2.00 Flag question Question text A cell phone company found that 75% of all customers want text messaging on their phones, 80% want photo capability, and 65% want both. What is the probability that a customer will want at least one of them? Select one: A. 0.90 B. 0.81 C. 0.87 D. 0.60...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT