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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HLT540 Week 6 Assignment t-Test for Two Samples

HLT-540 Week 6 Assignment t-Test for Two Samples for $14 Only
Max Points: 40

HLT540 Week 6 Assignment

Details:

A drug company is measuring levels of oxygenation in patients after receiving a test medication. As the researcher, you are interested in whether Group I, which received the medication, has the same oxygenation levels as Group II, which did not.

Group 1: 2,3,3,4,4,7,8,9
Group 2: 1,2,2,3,4,4,5,5,6,8
Use Excel to run a t-test for two samples, assuming equal variances, with an alpha value of 0.05. Run the t-test and note:

Are you doing a one-tailed test or a two-tailed test (Excel will give you both)?
What is the probability that Group I is different from Group 2, using the p value? Is it significant against the benchmark of p < .05?
While APA format is not required for the body of this assignment, solid academic writing is expected, and documentation of sources should be presented using APA formatting guidelines, which can be found in the APA Style Guide, located in the Student Success Center.

This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.

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Probability Questions and Answer

Probability Questions and Answer for $19 OnlyProbability Questions and Answer

1. 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?

A. 67%

B. 91%

C. 55%

D. 79%

2. The possible values of x in a certain continuous probability distribution consist of the infinite number of values between 1 and 20. Solve for P(x = 4).

A. 0.03

B. 0.00

C. 0.02

D. 0.05

3. If the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2 hours, what proportion of teenagers watch 16 to 18 hours of TV a week? (Assume a normal distribution.)

A. 4.5%

B. 4.2%

C. 2.1%

D. 0.3%

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

A. The number of three-point shots completed in a college basketball game

B. The average daily consumption of water in a household

C. The weight of football players in the NFL

D. The time required to drive from Dallas to Denver

5.Which of the following is correct concerning the Poisson distribution?

RES 341 Week 4 Chapter 5 E Exercises 5.62 and 5.70

Chapter 5 E Exercises 5.62 and 5.70

5.62 A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02. What is the probability that (a) both will fail? (b) Neither will fail? (c) One or the other will fail? Show all steps carefully.

5.70 The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Explain your reasoning carefully. Hint: Assume independent events. Why might the assumption of independence be violated? (b) Why might a driver be tempted not to use a seat belt “just on this trip”?

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QNT 561 Week 3 Individual Assignment A Decision of Uncertainty

Applied Business Research and Statistics- Week Three

Assignment: Decision of Uncertainty Paper

  • Resource: Week Three Student Roadmap
  • Research statistical data in a business context that requires a decision. Use probability concepts to formulate a decision.
  • Writea 700- to 1,050-word paper, explaining your research methods and process for limiting the uncertainty in the decision. Explain the following:
    • Include how you applied concepts to formulate your decision
    • Include appropriate probability concepts and your application to find resulting data to limit uncertainty in this decision.
    • Identify each outcome from your statistical analysis, providing rationale for each.
    • Identify tradeoffs between accuracy and precision required by various probability concepts and the effect on your data.
    • Include the decision you made based on statistical data.
    • Format your paper consistent with APA guidelines.

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