You are on a research team that is investigating the mean temperature of adult humans. The commonly accepted claim is that the mean temperature is about 98.6 degrees F. You want to show that this claim is false. How would you write the null and alternative hypothesis?

Now assume that you have a sample of 35 adults and their mean temperature is 97.8 and the standard deviation of the temperatures is 0.8 Complete the test with alpha = 0.01

1. What is the p-value and why? How did you calculate that?
2. What is the 95% confidence interval based on this sample?
3. Complete the test with critical values and provide the answer ( reject or not)?
4. Complete the test with p-value (reject or not)?
5. Do you reject or not reject the claim, the null or the alternative and why? Is it always like this?
6. What is your conclusion??? Is your conclusion related to the null, the alternative of the claim and why? Is it always like this?

Q 2?Rafique Inc. makes product A and sells at selling price of SAR 45 per unit. Badr Inc. wants to buy 5,000 units at SAR 27 per unit. Rafique Inc. has a normal capacity of 101,000 units and projected sales to regular customers this year is 92,000 units. Per unit costs traceable to the product (based on normal capacity of 92,000 units) are listed below?

Direct Materials??8.1

Direct Labour?`??6.0

Variable Mfg. Overhead?6.2

Fixed mfg. overhead??4.8

Fixed administrative costs?0.8

Fixed Selling Costs??0.4

Does the quantitative analysis suggest that the company should accept the special order?

k   Q 3 Discuss the qualitative factors in Keep or Drop Decision in details.

A three-phase 60-Hz transmission line is energized with 420 kV at the sending end. This line is lossless and 400 km long with ? = 0.001265 rad/km and ?? = 260 Ω. a) Suppose a three-phase short-circuit occurs at the receiving end. Determine the receiving end current and the sending end current. b) Determine the reactance and MVar of a shunt reactor to be installed at the load bus to limit the no-load receiving-end voltage to 440 kV. c) When the line delivers 800 MVA at 0.8 lagging power factor, a shunt capacitor bank is installed at the receiving end to improve the line performance. Determine the total Mvar and the capacitance of the Δ-connected capacitor bank to keep the receiving-end voltage at 400 kV when the sending-end voltage is 420 kV.

1. Consider two blood vessels that have the same length and resistance. Given these pressure
differentials along their lengths, which one will have the greatest flow? Why?
Vessel 1: P1 = 100 mmHg, P2 = 25 mmHg
Vessel 2: P1 = 500 mmHg, P2 = 400 mmHg

2. A healthy student requires a cardiac output of 4000mL per minute to support resting activity. The interval between beats is 0.8 secs.

In moderate exercise, such as walking, the student’s heart rate climbed to 135BPM, end diastolic volume decreased to 100mL and ejection fraction was 80%.

i. What is cardiac output?

ii. Why would end diastolic volume decline under these circumstances?

iii. What other changes may occur with exercise?

2. Arcarde Ltd issues both ordinary shares and preference shares to raise capital, in which 500,000 ordinary shares have been issued at the price of $10 and 100,000 preference shares with a par value of $100.

a. Company promises to pay an annual dividend rate of 6.5% per share for its preference shares. If similar investment has a rate of return of 10% p.a, what is the fair price of Arcarde’s preference share?

b. Company also plans to pay dividend for its ordinary shares as follow: Y1 (next year): $0.8; Y2: $1; Y3: $1, after year 3, the dividend will growth at the rate of 3% and company’s rate of return is currently 9%, what should be the fair price of each ordinary shares?

1. (13pt) The U.S. Census Bureau computes quarterly vacancy and homeownership rates by state and metropolitan statistical areas. The following data are the rental vacancy rates in percentage (%) grouped by region for the last quarter of 2018 using a sample of 4 statistical metropolitan areas.

                                     Vacancy rates (%)

1. (10pt) You are hired as statistician to test whether there are any differences among the regions regarding vacancy rates and you should allow for 10% error.

2. (3pt) Do you think that the mean vacancy rate is the same for these regions? Why?

The following information is for the next three questions. Investor P has the following portfolio:

01 - What are the weights of these four stocks in the portfolio?

02 - What is the expected return of the portfolio?

03 - What is the Beta of the portfolio?

Samples of computers are taken from two county library locations and the number of internet tracking spyware programs is counted. The first location hosted 21 computers with a mean of 4.1 tracking programs and a standard deviation of 0.8. The second location hosted 19 computers with a mean of 6.2 tracking programs and a standard deviation of 1.2.

a) Please calculate the appropriate standard error statistic for the scenario provided.

b)Please calculate a confidence interval around your point estimates as appropriate for the scenario. Use a confidence limit of 99% (.01)

c) Please calculate a confidence interval around your point estimates as appropriate for the scenario. Use a confidence limit of 95%.

d) How do your confidence intervals compare? Is this what you expected to see? Why?

Samples of computers are taken from two county library locations and the number of internet tracking spyware programs is counted. The first location hosted 21 computers with a mean of 4.1 tracking programs and a standard deviation of 0.8. The second location hosted 19 computers with a mean of 6.2 tracking programs and a standard deviation of 1.2.

a) Please calculate the appropriate standard error statistic for the scenario provided.

b)Please calculate a confidence interval around your point estimates as appropriate for the scenario. Use a confidence limit of 99% (.01)

c) Please calculate a confidence interval around your point estimates as appropriate for the scenario. Use a confidence limit of 95%.

d) How do your confidence intervals compare? Is this what you expected to see? Why?

Removing Pi from Na-K pump, the pump opens toward inside the cell. True or False?

Enzymes increase the speed of a reaction by decreasing the activation energy. Group of answer choices True False

The greater the lipid solubility of a substance, the slower the substance can diffuse through the membrane's lipid bilayer down its concentration gradient. Group of answer choices True False

By changing two Pyruvates to two AcoA, cell produces 2 NADH Group of answer choices True False

Secondary active transport usually occurs as a coupled transport process. Group of answer choices True False

You put one RBC in a 0.8 Osm solution. The RBC would Group of answer choices

crenate

remain constant

It ruptures there is not enough information to answer this question