c. What percentage of regular grade gasoline sold for more than $3.63 per gallon?
In: Statistics and Probability
The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 264.8 and a standard deviation of 60.4. (All units are 1000 cells/muL.) Using the empirical rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 3 standard deviations of the mean, or between 83.6 and 446.0? b. What is the approximate percentage of women with platelet counts between 144.0 and 385.6? a. Approximately nothing% of women in this group have platelet counts within 3 standard deviations of the mean, or between 83.6 and 446.0.
In: Statistics and Probability
Consider a stock whose value increases across an 8-year period as shown in Table 17P-2. [LO 17.2]
Calculate the percentage change in the value of the stock from year to year.
Calculate the percentage change in the value of the stock across the entire 8-year period.
Do you think this qualifies as a bubble? Why or why not?
TABLE 17P-2
| Year | Stock Value ($) | Percentage Change |
| 1 | 50.00 | n/a |
| 2 | 60.00 | |
| 3 | 75.00 | |
| 4 | 86.25 | |
| 5 | 103.50 | |
| 6 | 155.25 | |
| 7 | 248.40 | |
| 8 | 372.60 |
In: Economics
At one point the average price of regular unleaded gasoline was
$3.543.54
per gallon. Assume that the standard deviation price per gallon is
$0.080.08
per gallon and use Chebyshev's inequality to answer the following.
(a) What percentage of gasoline stations had prices within
33
standard deviations of the mean?
(b) What percentage of gasoline stations had prices within
2.52.5
standard deviations of the mean? What are the gasoline prices that are within
2.52.5
standard deviations of the mean?
(c) What is the minimum percentage of gasoline stations that had prices between
$3.383.38
and
$3.703.70?
In: Math
17. The lengths of a population of certain HULU shows I watch are normally distributed with a mean running time of 38 minutes and a standard deviation of 11.5.
2.Between what values would you expect to find the middle 80 %
3. Find the percentage of shows with running times below 47.5 minutes
4.Above what value would you expect to find the top 25 %?
5.Find the percentage of shows with running times above 18 minutes.
In: Math
A pollster surveyed a sample of 980 adult Americans, asking them if they own a personal firearm. 34% of the sample said yes.
1. What is a 90% confidence interval estimate for the percentage of Americans that own a firearm?
2. A gun owners’ group claims that more Americans own a firearm in 2015 than ten years ago, when the percentage of owners was 30%. At the 0.05 level of significance, has the percentage of owners increased?
3. What is the p-value for this problem? How does it tell you what conclusion to draw about the null hypothesis?
In: Math
Suppose Intel stock has a beta of 1.53, whereas Boeing stock has a beta of 0.91. If the risk-free interest rate is 3.5% and the expected return of the market portfolio is 10.9%, according to the CAPM,
a. What is the expected return of Intel stock? Answer in percentage
b. What is the expected return of Boeing stock? Answer in percentage
c. What is the beta of a portfolio that consists of 60% Intel stock and 40% Boeing stock?
d. What is the expected return of a portfolio that consists of 60% Intel stock and 40% Boeing stock? (There are two ways to solve this.) (Answer in percentage)
In: Finance
You are given the following information regarding prices for a sample of stocks.
| PRICE | ||||||
| Stock | Number of Shares | T | T + 1 | |||
| A | 2,700,000 | $64 | $78 | |||
| B | 14,000,000 | 26 | 41 | |||
| C | 26,000,000 | 22 | 28 | |||
Construct an equal-weighted index by assuming $1,000 is invested in each stock. What is the percentage change in wealth for this portfolio? Do not round intermediate calculations. Round your answer to two decimal places.
%
Compute the percentage of price change for each of the stocks. Do not round intermediate calculations. Round your answers to two decimal places.
Stock A: %
Stock B: %
Stock C: %
Compute the arithmetic mean of these percentage changes. Do not round intermediate calculations. Round your answer to two decimal places.
%
Compute the geometric mean of the percentage changes in Part b. Do not round intermediate calculations. Round your answer to two decimal places.
%
In: Finance
Both Bond Sam and Bond Dave have 6 percent coupons, make semiannual payments, and are priced at par value. Bond Sam has 4 years to maturity, whereas Bond Dave has 14 years to maturity. If interest rates suddenly rise by 2 percent, what is the percentage change in the price of Bond Sam? • 6.83% • -6.71% • -6.73% • -7.22% If interest rates suddenly rise by 2 percent, what is the percentage change in the price of Bond Dave? • -16.66% • -19.99% • -16.64% • 17.55% If rates were to suddenly fall by 2 percent instead, what would the percentage change in the price of Bond Sam be then? • -6.68% • 7.33% • 6.83% • 7.31% If rates were to suddenly fall by 2 percent instead, what would the percentage change in the price of Bond Dave be then? • 21.28% • 17.55% • 21.26% • -16.61%
In: Finance
A taxpayer, age 64, purchases an annuity from an insurance company for $90,000. She is to receive $750 per month for life. Her life expectancy 20.8 years from the annuity starting date. Assuming that she receives $9,000 this year, what is the exclusion percentage and how much is included in her gross income?
Round the exclusion percentage to two decimal places. Round the final answer for the income to the nearest dollar.
A taxpayer, age 64, purchases an annuity from an insurance company for $90,000. She is to receive $750 per month for life. Her life expectancy 20.8 years from the annuity starting date. Assuming that she receives $9,000 this year, what is the exclusion percentage and how much is included in her gross income?
Round the exclusion percentage to two decimal places. Round the final answer for the income to the nearest dollar.
In: Accounting