5. Assume the demand for plastic surgery is price inelastic. Are the following statements true of false? Explain.
a. When the price of plastic surgery increases, the number of operations decreases.
b. The percentage change in the price of plastic surgery is less than the percentage change in quantity demanded.
c. Changes in the price of plastic surgery do not effect the number of operations.
d. Quantity demanded is quite responsive to changes in price.
e. If more plastic surgery is performed, expenditures on plastic surgery will decrease.
f. The marginal revenue of another operationis negative.
In: Economics
Please use this description to calculate the values requested below (correct to 3 decimal places)...
The athletic departments at 10 randomly selected U.S. universities were asked by the Equal Employment Opportunity Commission to state what percentage of their nursing scholarships were presently held by women. The responses were 5, 4, 2, 1, 1, 2, 10, 2, 3, 5.
CV (hint: write this as a percentage without the % symbol, not a proportion)
p-value for the Anderson-Darling normality test
Upper outer fence of the boxplot
In: Statistics and Probability
A publisher reports that 26% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually below the reported percentage. A random sample of 280 found that 20% of the readers owned a particular make of car. Is there sufficient evidence at the 0.02 level to support the executive's claim? Step 4 of 7 : Determine the P-value of the test statistic. Round your answer to four decimal places.
H0: p=0.26 Ha: p<0.26 z=−2.29 One-Tailed Test
In: Statistics and Probability
In a study of the accuracy of fast food drive-through orders, Restaurant A had
236236
accurate orders and
6868
that were not accurate.a. Construct a
9090%
confidence interval estimate of the percentage of orders that are not accurate.b. Compare the results from part (a) to this
9090%
confidence interval for the percentage of orders that are not accurate at Restaurant B:
0.2090.209less than<pless than<0.2790.279.
What do you conclude?
a. Construct a
9090%
confidence interval. Express the percentages in decimal form.
nothingless than<pless than<nothing
(Round to three decimal places as needed.)
In: Statistics and Probability
A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity.
a. What sample size should be obtained if she wishes the estimate to be within two percentage points with 99% confidence, assuming that she uses the estimates of 22.9% male and 19.1% female from a previous year?
b. What sample size should be obtained if she wishes the estimate to be within two percentage points with 99% confidence, assuming that she does not use any prior estimates?
In: Statistics and Probability
A political pollster is conducting an analysis of sample results in order to make predictions on election night. Assuming a? two-candidate election, if a specific candidate receives at least
55?% of the vote in the? sample, that candidate will be forecast as the winner of the election. You select a random sample of 100 voters. Complete parts? (a) through? (c) below.
|
a. |
What is the probability that a candidate will be forecast as the winner when the population percentage of her vote is 50.1% |
|
b. |
What
is the probability that a candidate will be forecast as the winner
when the population percentage of her vote is
58%? |
In: Statistics and Probability
A random sample of 154 recent donations at a certain blood bank
reveals that 84 were type A blood. Does this suggest that the
actual percentage of type A donations differs from 40%, the
percentage of the population having type A blood? Carry out a test
of the appropriate hypotheses using a significance level of
0.01.
State the appropriate null and alternative hypotheses.
Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.)
| z | = | |
| P-value | = |
In: Statistics and Probability
A BBB-rated corporate bond has a yield to maturity of
11.8 %11.8%.
A U.S. treasury security has a yield to maturity of
9.8 %9.8%.
These yields are quoted as
APRs
with semiannual compounding. Both bonds pay semi-annual coupons at a rate of
10.8 %10.8%
and have five years to maturity.
a. What is the price (expressed as a percentage of the face value) of the treasury bond?
b. What is the price (expressed as a percentage of the face value) of the BBB-rated corporate bond?
c. What is the credit spread on the BBB bonds?
In: Finance
A BBB-rated corporate bond has a yield to maturity of
7.0 %7.0%.
A U.S. treasury security has a yield to maturity of
5.1 %5.1%.
These yields are quoted as
APRs
with semiannual compounding. Both bonds pay semi-annual coupons at a rate of
5.6 %5.6%
and have five years to maturity.
a. What is the price (expressed as a percentage of the face value) of the treasury bond?
b. What is the price (expressed as a percentage of the face value) of the BBB-rated corporate bond?
c. What is the credit spread on the BBB bonds?
In: Finance
A sample of n = 1,033 adults in the United States was asked, "Do you think the police should or should not be allowed to collect DNA information from suspected criminals, similar to how they take fingerprints?" Of those sampled, 68% answered "should". (Round your answers to the nearest tenth.)
(a) Calculate the conservative margin of error for the survey, as a percentage.
(b) Compute an approximate 95% confidence interval for the percentage of all American adults who think police should be allowed to collect DNA information from suspected criminals.
In: Statistics and Probability