Question

A sample of 20 test scores were taken from a normally distributed population produced the following...

  1. A sample of 20 test scores were taken from a normally distributed population produced the following data. Suppose we want to estimate the true mean test score of all using the ample values.

44 52 31 48 46 39 47 36 41 57 45 52 31 48 46 39 47 38 41 59

  1. Identify the parameter. Is it known?
  1. Make a 95% confidence interval for the mean score of all. Take the population standard deviation as 2.5.
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
Refer to the Body Measurements Female Data Set and Body Measurements Male Data Set found in...
Refer to the Body Measurements Female Data Set and Body Measurements Male Data Set found in StatDisk (Elementary Stats 12th Edition, sets #1a and 1b) and use columns 5 for HDL. Use a .05 significance level to test the claim that men and women have the same mean HDL level (High-Density Lipoprotein) female 74 56 70 40 67 96 43 80 77 41 23 76 39 52 38 37 57 81 37 50 73 61 33 41 60 62 67...
2a. Describe the sample and population you are studying. I am studying customers' satisfaction level with...
2a. Describe the sample and population you are studying. I am studying customers' satisfaction level with their car insurance plan. 2b. Calculate the sample mean and sample standard deviation for your variable. Keep at least four decimal places. 2c. Calculate the standard error and the margin of error for a 90% confidence interval. Keep at least four decimal places. Data: 36 18 66 43 28 39 47 40 24 46 48 57 36 58 39 62 43 65 74 36...
The test scores of a population of 10 students are as follow: 29, 35, 39, 42,...
The test scores of a population of 10 students are as follow: 29, 35, 39, 42, 44, 45, 47, 50, 53, 59. If you randomly select a sample of size 4, what is the probability that the average test score in this sample be between 42 and 46? (Please show work). A. 0 B. 0.15 C. 0.29 D. 0.37 E. 0.66
1. The test scores of a population of 10 students are as follow: 29, 35, 39,...
1. The test scores of a population of 10 students are as follow: 29, 35, 39, 42, 44, 45, 47, 50, 53, 59. What is the average test score of this population? a. 44 b. 44.3 c. 45 d. 45.3 2. What is the population standard deviation? a. 8.283 b. 8.751 c. 9.028 d. 9.754 (Please provide how you found the answer)
How Democratic is Georgia? County-by-county results are shown for a recent election. For your convenience, the...
How Democratic is Georgia? County-by-county results are shown for a recent election. For your convenience, the data have been sorted in increasing order (Source: County and City Data Book, 12th edition, U.S. Census Bureau). Percentage of Democratic Vote by Counties in Georgia 31 33 34 34 35 35 35 36 38 38 38 39 40 40 40 40 41 41 41 41 41 41 41 42 42 43 44 44 44 45 45 46 46 46 46 47 48 49...
How Democratic is Georgia? County-by-county results are shown for a recent election. For your convenience, the...
How Democratic is Georgia? County-by-county results are shown for a recent election. For your convenience, the data have been sorted in increasing order (Source: County and City Data Book, 12th edition, U.S. Census Bureau). Percentage of Democratic Vote by Counties in Georgia 31 33 34 34 35 35 35 36 38 38 38 39 40 40 40 40 41 41 41 41 41 41 41 42 42 43 44 44 44 45 45 46 46 46 46 47 48 49...
Suppose the following data are selected randomly from a population of normally distributed values. 46 51...
Suppose the following data are selected randomly from a population of normally distributed values. 46 51 43 48 44 57 54 39 40 48 45 39 45 Construct a 95% confidence interval to estimate the population mean. Appendix A Statistical Tables (Round the intermediate values to 2 decimal places. Round your answers to 2 decimal places.) ≤ μ ≤
Below are matched pair data consisting of driving test scores for a sample of 11 licensed...
Below are matched pair data consisting of driving test scores for a sample of 11 licensed drivers before and after they took an online traffic safety class. At a 0.05 significance level, use the sign test to test the claim that taking this online class affects driving test scores. Before 31 44 40 50 53 48 59 31 38 58 55 After 31 47 41 48 52 52 55 35 37 59 55 (a) What is the value of the...
A random sample of small-business managers was given a leadership style questionnaire. The results were scaled...
A random sample of small-business managers was given a leadership style questionnaire. The results were scaled so that each manager received a score for initiative. Suppose the following data are a random sample of these scores. 38 42 39 39 38 31 39 38 35 45 30 33 35 44 36 38 39 33 39 39 41 33 35 36 41 33 38 38 39 42 44 35 36 33 38 32 30 38 42 Assuming σ is 3.891, use...
The following sample data were obtained from three populations that did not follow a normal distribution...
The following sample data were obtained from three populations that did not follow a normal distribution sample 1- 50 54 59 59 65 sample 2- 48 49 49 52 56 57 sample 3- 39 41 44 47 51 Using the 0.05 level of risk, state the decision rule (round to 3 decimal places.) compute the value of the test statistic
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT