Answers for Applied Statistics: Find A 99% Confidence Interval

Answers for Applied Statistics: Find A 99% Confidence Interval for $3 Only (Instant Download)

Find A 99% Confidence Interval for the difference (male-female) between the actual proportions of male and female who prefer tea over a coffee which gender prefer tea over coffee.

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Answers for Applied Statistics: Difference Between Men and Women’s Yearly Salaries

Answers for Applied Statistics: Difference Between Men and Women’s Yearly Salaries for $3 Only (Instant Download)

Yearly Salaries

Assume that you are analyzing whether there is a difference between men and women’s yearly salaries. from a random sample of 55 women you find the mean salary to be 47520 TRY with a standard deviation of 5633 TRY from a sample of 64 men you find the mean salary to be 44304 TRY with standard deviation of 4793 TRY assume the random sample observations are from normally distributed populations and that the population variances are assumed to be equal develop a 95% confidence interval for the difference (women-men) between the population mean salary for men and women which gender does get a high salary.

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Serum Cholesterol Levels in Milligrams

Serum Cholesterol Levels in Milligrams

Serum Cholesterol Levels in Milligrams for $9 Only

The serum cholesterol levels in milligrams/deciliter (mg/dL) in a certain Mediterranean population are found to be normally distributed with a mean of 154 and a standard deviation of 28. Answer the following: (a) Determine the z-score for a person from this population that has a cholesterol level of 135. Then find the z-score for someone whose cholesterol level is 217. (b) If x represents a possible cholesterol level from this population, find P(x > 135). (c) Find P(135 < x < 217) and give an interpretation of this value. (d) The top 11% of all people in this group have cholesterol levels that make them “at-risk” for heart problems. Determine the raw-score cholesterol level which separates the at-risk people from the rest of the group.

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Multiple Choice 20 Questions

Multiple Choice 20 Questions for $5 OnlyMultiple Choice 20 Questions

Free Sample Anwer Given Below

1. The Burger Bin fast-food restaurant sells a mean of 24 burgers an hour and its burger sales are normally distributed. What is the probability that the Burger Bin will sell 12 to 18 burgers in an hour?

The standard deviation should be given. Regardless of the standard deviation, the only possible correct answer below is 0.136.

A. 0.239 B. 0.342 C. 0.136 D. 0.475

2. The probability of an offender having a speeding ticket is 35%, having a parking ticket is 44%, having both is 12%. What is the probability of an offender having either a speeding ticket or a parking ticket or both?

35% + 44% – 12% = 67%

A. 67% B. 91% C. 79% D. 55%

3. Tornadoes for January in Kansas average 3.2 per month. What is the probability that, next January, Kansas will experience exactly two tornadoes?

A. 0.4076 B. 0.2226 C. 0.2087 D. 0.1304

4. Which of the following is a discrete random variable?

BTM8107-8 Week 8 Activity Apply MANOVA and Prepare a Course Reflection

BTM8107-8 Week 8 Activity Apply MANOVA and Prepare a Course Reflection in $45 Only

You will submit one Word document. You will create this Word document by cutting and pasting SPSS output into Word.

Part A. SPSS Assignment
In this exercise, you are playing the role of a researcher that is testing new medication designed to improve cholesterol levels. When examining cholesterol in clinical settings, we look at two numbers: low-density lipoprotein (LDL) and high-density lipoprotein (HDL). You may
have heard these called “good” (HDL) and “bad” (LDL) cholesterol. For LDL, lower numbers are better (below 100 is considered optimal).For HDL, 60 or higher is optimal.

In this experiment, you will be testing three different versions of the new medication. In data file “Activity 8.sav” you will find the following variables: group (0=control, 1=Drug A, 2=Drug B, 3=Drug C), LDL, and HDL (cholesterol numbers of participants after 12 weeks).

STAT 200 Week 5 Homework

STAT 200 Week 5 Homework in $18 Only

4. Why is a 99% confidence interval wider than a 95% confidence interval?

12. A person claims to be able to predict the outcome of flipping a coin. This person is correct 16/25 times. Compute the 95% confidence interval on the proportion of times this person can predict coin flips correctly. What Conclusion can you draw about this test of his ability to predict the future?

15. You take a sample of 22 from a population of test scores, and the mean of your sample is 60. (a) You know the standard deviation of the population is 10. What is the 99% confidence interval on the population mean. (b) Now assume that you do not know the population standard deviation, but the standard deviation in your sample is 10. What is the 99% confidence interval on the mean now?

STATS 230 Final

STATS 230 Final in $90 Only

1. True or False. Justify for full credit. (25 pts) (a) The volume of milk in a jug of milk is 128 oz. The value 128 is from a discrete data set. (b) If the variance from a data set is zero, then all the observations in this data set must be zero. (c) P(A ANDA ) 0, whereA is the complement of A. c c (d) The mean and median for a normal distribution are always the same. (e) In a hypothesis testing, if the p-value is less than the significance level α, we do not have sufficient evidence to reject the null hypothesis. Refer to the following frequency distribution for Questions 2, 3, 4, and 5. Show all work. Just the answer, without supporting work, will receive no credit. A random sample of 25 customers was chosen in UMUC MiniMart between 3:00 and 4:00 PM on a Friday afternoon. The frequency distribution below shows the distribution for checkout time (in minutes). Checkout Time (in minutes) Frequency Relative Frequency 1.0 – 1.9 6 2.0 – 2.9 8 3.0 – 3.9 4.0 – 5.9 5 Total 25 2. Complete the frequency table with frequency and relative frequency. (5 pts) 3. What percentage of the checkout times was less than 3 minutes? (5 pts) 4. In what class interval must the median lie? Explain your answer. (5 pts) 5. Assume that the largest observation in this dataset is 5.8. Suppose this observation were incorrectly recorded as 8.5 instead of 5.8. Will the mean increase, decrease, or remain the same? Will the median increase, decrease or remain the same? Why? (5 pts)

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STAT 225 Homework

STAT 225 Homework in $36 Only

1.  Lane et al.      Introduction to Statistics, David M. Lane et al., 2013.  (http://onlinestatbook.com/Online_Statistics_Education.pdf)

2.    Illowsky et al.   Introductory Statistics, Barbara Illowsky et al., 2013. (http://openstaxcollege.org/files/textbook_version/hi_res_pdf/15/col11562-op.pdf)

Homework Assignment:

 Do the following 10 exercises…..

#TextChapterExercisepage
1Lane et al.1362
2Lane et al.11063
3Lane et al.11764
4Lane et al.11864
5Illowsky et al.15053
6Illowsky et al.15253
7Illowsky et al.17254
8Illowsky et al.18056
9Illowsky et al.18457
10Illowsky et al.19059

Week 7 Assignment: Analyze Samples, Power Analysis, and Design Sensitivity

Week 7 Assignment: Analyze Samples, Power Analysis, and Design Sensitivity in $25 OnlyWeek 7 Assignment: Analyze Samples, Power Analysis, and Design Sensitivity

Activity Description
Submit the Following
1. Calculate the sample size needed given these factors:
one-tailed t-test with two independent groups of equal size small effect size (see Piasta, S.B., & Justice, L.M., 2010)
alpha =.05
beta = .2
Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample half the size. Indicate the resulting alpha and beta. Present an argument that your study is worth doing with the smaller sample.

MAT 540 Standard Normal Random Variable

MAT 540 Standard Normal Random Variable in $1.70 Only

For a standard normal random variable Z, find P[? 1.9 < z < 2.75]. Compute probabilities using the standard normal table in Appendix B (Table 3). Round the answer to four decimal places.

P[? 1.9 < z < 2.75] =

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