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The Morningstar Top Fund lists at the Morningstar.com website give the mean yearly return and the standard deviation of the returns for each of the listed funds. As given by Morningstar.com on March 17, 2005, the RS Internet Age Fund has a mean yearly return of 12.93 percent with a standard deviation of 43.96 percent; the Franklin Income A fund has a mean yearly return of 15 percent with a standard deviation of 9.81 percent; the Jacob Internet fund has a mean yearly return of 40.75 percent with a standard deviation of 43.12 percent.
For each mutual fund, find an interval in which you would expect 95.44 percent of all yearly returns to fall. Assume returns are normally distributed.
Identify the type of sampling (random, systematic, convenience, stratified, cluster) used when a sample of people who smoke is obtained as described below.
A contingency table has 5 rows and 4 columns. How many degrees of freedom are there?
Following a lognormal distribution with a mean of 3000 rpm and std deviation of 0.87, what if the boss want a 5% chance of HW failure before selling, how often would I have to replace this hardware ?
The caffeine content of 20 brands of regular coffee is shown below. 80 82 89 85 87 30 33 44 40 46 50 55 60 62 71 90 92 75 63 65. Thus, this job helps to construct a Frequency Distribution with a class interval of 10, starting with 30.
Suppose you manage Tennessee Grilled Pork, a fast food restaurant specializing in pork sandwiches and pork chops on a stick. You have decided to build a new restaurant and have 2 possible site locations
In a slow year, Deutsche Burgers will produce 2 million hamburgers at a total cost of $3.5 million. In a good year, it can produce 4 million hamburgers at a total cost of 4.5 million.
There are 8 members on the board of directors. If the board must form a committee of 6 members, how many different ways may the committee be selected from among the 8 board members?
A survey of magazine subscribers showed that 55.8% rented a car during the last 12 months for business reasons, 44% rented a car for personal reasons, and 25% rented a car for both business and personal reasons.
Assume we interested in relationship between the age of individual, as measured by visits. Suppose after selecting 15 members the observation:
Using the .05 significance level, can we conclude that there is a positive association between the two variables?
Complete the table and answer the following questions. Use the .05 significance level.
Determine and plot the probability mass function and probability distribution function of the contract award amount (in millions of dollars).
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