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Supposed that you believe that the probability that his team wins is 80%. If your judgement is accurate, who does expected value of the result favor, you or your friend?
How many choices are possible if Al and Bob are fueding and will not go to the party? How many choices are possible if Al and Betty insist that they both go or neither goes?
Four people are randomly from a group consisting of six men and six women. What is the probability that the group will consist of two men and two women?
How many strings of ten digits length can be formed using only the digits 1,2,3,4,5? Digits may be used more than once in the same string.
Data Analysis Problem: For the data set below, calculate the following: Mean or average Variance Standard Deviation Mode Medium Range Q1, Q3, and IQR
Twenty percent of all telephones of a certain type are submitted for service while under warranty. Of these, 60% can be repaired, whereas the other 40% must be replaced with new units. If a company
A local children's boutique specializes in formal wear for young girls. It has recently hired a new seamstress. To assure the dresses have standard sizes, twenty samples of each 12 dresses that were
Shorney Construction Company bids on projects assuming the mean idle time per worker is 72 or fewer minutes per day. a sample of 30 construction workers will be used to test this assumption. Assume
Suppose that 10% of all steel shafts produced by a process are nonconforming but can be reworked (rather than having to be scrapped). Consider a random sample of 200 shafts, and let X denote the num
The average number of television sets in the sample households turns out to be 2.56, and the SD is 0.73. What is the observed value for the average number of television sets per household?
A pharmaceutical company claims that their drug is effective on more than 90% of all adults. A research company randomly selects 1000 adults and finds that the drug was effective on 850 of them. Us
Suppose that there is a constant probability p that any emitted particle is not counted. If Rt equals the number of particles counted during the specified interval, what is the probability distribut
Three couples and two single individuals have been invited to a party. Assume independence of arrivals to the party, and that the probability pf any particular individual or any particular couple ar
A total of 1120 received drug-coated stents, and 134 of them required treatment within ayear. At the 0.01 significance level, test the claim that the proportion of patients who needed retreatment wa
The average number of children for women was 1.85 with a standard deviation of 1.57. At the 0.05 significance level, test the cliam that the average number of children for men is equal to the averag
At the 0.01 significance level, test the claim that a majority of those with type 2 diabetes who undergo this surgery will recover from diabtes.
Fro this sample, the mean weight lost was 18.65 pounds with a standard deviation of 8.82 pounds. At the 0.05 significance level, test the claim that the mean weight loss is more than 15 pounds. The
The Center of Disease Control and Prevention reported the diastolic blood pressure of adult women in the US are approximately normally distributed with a mean of 80.5 and standard deviation of 9.9
For each of the following situations, indicate how you might use ratio or regression estimation. Estimate the proportion of time in television news broadcasts in your city that is devoted to sports.
If A and B are mutually exclusive events then P(A or B) equals...
A 6-faced die is rolled two times. Let A be the event that the outcome of the first roll is greater than 4. Let B be the event that the outcome of second roll is an odd number. 8. What is the probab
Suppose f(x, y)=1 & g(x, y)= x+y ,0< x <1, 0<y<1 , Determine the most powerful test of size ? =.05 of hyp:(X,Y)~f vs.alt:(X,Y)~g
Write the expression for P(X = 15 tasters) using pk(1-p)n-k notation. Use your calculator to evaluate the expression in a.).
A newspaper article reported that a poll based on a sample of 1150 residents of a state showed that the state's Governor's job approval rating stood at 58%. They claimed a margin of error of ±