27. A buyer will purchase handbags at a cost of $37.75 and the planned MU% for the department is 62.0%. What is the minimum retail price for each handbag? What possible retail price for each handbag might be used if you were the buyer of a department for? An off-price retailer?

In a random sample of​ males, it was found that 27 write with their left hands and 223 do not. In a random sample of​ females, it was found that 72 write with their left hands and 464 do not. Use a 0.01 significance level to test the claim that the rate of​ left-handedness among males is less than that among females.

Complete parts​ (a) through​ (b) below.

a) Identify the test statistic. Z= ___

b) Identify the P-value = ____

Suppose x has a distribution with μ = 27 and σ = 19.

(a) If a random sample of size n = 39 is drawn, find μx, σ x and P(27 ≤ x ≤ 29). (Round σx to two decimal places and the probability to four decimal places.) μx = σ x = P(27 ≤ x ≤ 29) =

(b) If a random sample of size n = 64 is drawn, find μx, σ x and P(27 ≤ x ≤ 29). (Round σ x to two decimal places and the probability to four decimal places.) μx = σ x = P(27 ≤ x ≤ 29) =

(c) Why should you expect the probability of part (b) to be higher than that of part (a)? (Hint: Consider the standard deviations in parts (a) and (b).)

The standard deviation of part (b) is part (a) because of the sample size. Therefore, the distribution about μx is .

A researcher is working with a normally distributed population with a mean of 27 and standard deviation of 10. If you randomly choose a sample 169 participants, what proportion of the sample means will be less than 25? Show all of your calculations for full credit.

The parents of an infant born at 27 weeks are having difficulty with feedings and are becoming frustrated. Their infant seems irritated a good part of the day and appears hungry, but when they are feeding him, the baby starts to nap and will not stay awake long enough to take adequate nourishment.

a) How would you address this problem?

b) What would be important for these parents to know?

c) Provide at least 4 suggestions to them on how to deal with this and how they will be able to assess whether this child is experiencing normal growth.

An organism has 27 chromosomes. Use a * to represent centromeres, and a $ to represent repetitive regions of DNA caused by transposable elements. Chromosome 4 has the sequence A$BC*$DE, while chromosome 17 has the sequence L$MNO$*PQ.

1. If chromosome 17 misaligns with itself (without flipping backward) during meiosis I and undergoes crossing over in the repetitive region, what will be the sequences of chromosome 17 that result in each of the four gametes produced by this cell?

2. What abnormal chromosome sequences could be created if chromosome 4 misaligned with itself (without flipping backward) (there should be 2 of these)?

3. Which of the abnormal sequences would be likely to be left hanging out in the cytoplasm (where it would likely degrade) without being tugged into either nucleus?

4. If instead of misaligning with itself, chromosome 4 aligned with chromosome 17 (without flipping backward or having any double crossover events), provide 6 of these sequences, and label the ones that have too many or too few centromeres?

5. For a Eukaryotic animal cell, is it generally more deleterious to be triploid or to have trisomy of a single chromosome? Why is triploidy an impossible long-term state for the generations that come after a triploid organism that reproduces sexually?

At central hospital, there is a 27% chance that a patient will get an infection. We take a random sample of 25 patients. Find the following probabilities. (round all answers to 4 decimal places)

a. What is the probability that 3 or fewer of the patients will get an infection?

b. Find the probability that more than 10 of the patients will get an infection.

c. How likely is it that less than 6 would get an infection?

d. Compute the probability that at least 9 patients will get an infection.

It is estimated that 27% of births at a particular hospital are by caesarian section. Suppose a sample of 5 births is taken from this hospital.

(a). What is the probability that at most 2 births will be by caesarian section in this hospital?



(b). Write the R code to compute the probability in part (a).



(c). What is the mean number of births delivered by caesarian section in this hospital?



(d). What is the standard deviation of the number births delivered by caesarian section in this hospital?

Suppose that there are 27 matches originally on the table, and you are challenged by your dinner partner to play this game. Each player must pick up either 1, 2, 3, or 4 matches, with the player who picks up the last match pays for dinner. What is your optimal strategy? (Describe your decision rule as concisely as you can.)

A) At a temperature of 27 ?C, what is the speed of longitudinal waves in hydrogen (molar mass 2.02 g/mol)? The ratio of heat capacities for hydrogen is ?=1.41.

B) At a temperature of 27 ?C, what is the speed of longitudinal waves in helium (molar mass 4.00 g/mol)? The ratio of heat capacities for helium is ?=1.67.

C)

At a temperature of 27 ?C, what is the speed of longitudinal waves in argon (molar mass 39.9 g/mol)? The ratio of heat capacities for argon is ?=1.67.

D,E, F i need help please and show work please

D)Compare your answer for part A with the speed in air at the same temperature. The ratio of heat capacities for air is ?=1.40.

E)Compare your answer for part B with the speed in air at the same temperature. The ratio of heat capacities for air is ?=1.40.

F)Compare your answer for part C with the speed in air at the same temperature. The ratio of heat capacities for air is ?=1.40.