Women athletes at the a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 36 women athletes at the school showed that 21 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%? Use a 10% level of significance.

(a) What is the level of significance?

(b) State the null and alternate hypotheses.

(c) What is the value of the sample test statistic? (Round your answer to two decimal places.)

(d) Find the P-value of the test statistic. (Round your answer to four decimal places.)

We are interested in studying whether education level affects people's credit default risk (failing to pay their credit debt). A random study was conducted to see the percent of those who default on their credit card was conducted.

Highest level of education attained % defaulted Number of people studied

High School    36% 100

Some College 20% 160

Bachelor's degree 15% 180

Advanced degree 6% 50

Test the null hypothesis of whether the population proportions of credit default rate is the same for all levels of education.

Provide the test statistic value from your analysis and P-value

Problem 4. You would like to have enough money saved to receive $200,000 per year after retirement so that you and your family can lead a good life for 30 years (from age 65 to 95). You will make your first withdraw of $200,000 at the end of year when you are 65. If you will be 35 years old when you graduate and plan on making savings contributions at the end of your first year out of school, how much would you need to save in your post-MBA retirement fund to achieve this goal? Assume an interest rate is 8%.  

The College Board finds that the distribution of students' SAT scores depends on the level of education their parents have. Children of parents who did not finish high school have SAT math scores X with mean 446 and standard deviation 103. Scores Y of children of parents with graduate degrees have mean 555 and standard deviation 107. Perhaps we should standardize to a common scale for equity. Find numbers a, b, c, and d such that a + bX and c + dY both have mean 500 and standard deviation 100. (Round your answers to two decimal places.)

a =

b =

c =

d=

Suppose Mandy’s earnings are given by w(S, A) = (SA+1)^(1/2) , where S denotes years of schooling and A denotes ability. Assume that Mandy lives forever, discounts future income at a rate of r, earns nothing while in school, and supplies labor inelastically thereafter. Assume that A is exogenous and time is continuous, Mandy’s objective is to choose S to maximize the present value of lifetime earnings.

(a) Calculate Mandy’s present value of lifetime earnings.

(b) Find Mandy’s optimal choice of years of schooling S* .

(c) Find the partial derivatives of S* with respect to A. Is the relationship between S* and A intuitively reasonable? Explain

A random sample of 83 eighth grade​ students' scores on a national mathematics assessment test has a mean score of 278. This test result prompts a state school administrator to declare that the mean score for the​ state's eighth-graders on this test is more than 275. Assume that the population standard deviation is 35. At α=0.08 is there enough evidence to support the​ administration's claim? Complete parts​ (a) through​ (e).

A is done

B: fine the standardized test statistic z, and its corresponding area. Z= (round to two decimal points)

C: find the p-value

D: decide whether to reject or fail to reject the null hypothesis

1. In a person without Type 2 diabetes and with a 10-year ASCVD risk determined to be 15% with two other risk factors, what do the 2018 cholesterol guidelines suggest?
   1. The person may be withheld statin therapy because his 10-year risk is <20%
   2. The person should be considered for moderate intensity statin therapy
   3. The person is recommended for high intensity statin therapy
   4. None of the above
2. What is an example of secondary prevention?
   1. Reducing cholesterol levels in persons with a prior stroke
   2. Jump rope for heart health in school children
   3. Blood pressure control in persons with coronary calcium but no evidence of clinical events
   4. a and c
   5. All of the above

Coal with 40% C, 30% H and 30% ash by weight at 1000 kg / h flow (school
the last digit of your number) is burned with dry air fed by kmol / second. Chimney from the oven
In addition to its gas, there is a solid waste, 95% of this waste is all of the ash in coal, back
the rest is unburned carbon. While all the hydrogen in the fuel is oxidized to water;
carbon burns so that the selectivity of carbon dioxide in carbon monoxide is 10.
a. calculate Percentage of excess air used,
b. Calculate what percentage of oxygen increases

if you can help me quickly that would be great thanks

.

A poll reported that only 593 out of a total of 1594 adults in a particular region said they had a​ "great deal of​ confidence" or​ "quite a lot of​ confidence" in the public school system. This was down 5 percentage points from the previous year. Assume the conditions for using the CLT are met. Complete parts​ (a) through​ (d) below.

a. Find a 95​% confidence interval for the proportion that express a great deal of confidence or quite a lot of confidence in the public​ schools, and interpret this interval.

The 95​% confidence interval for the proportion that express a great deal of confidence or quite a lot of confidence in the public schools is ?

​(Round to three decimal places as​ needed.)