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In New York State, savings banks are permitted to sell a form of life insurance called savings bank life insurance (SBLI). The approval process consists of underwriting, which includes a review of the application, a medical information bureau check, possible requests for additional medical information and medical exams, and a policy compilation stage in which the policy pages are generated and sent to the bank for delivery. The ability to deliver approved polices to customers in a timely manner is critical to the profitability of this services. During a period of one month, a random sample of 27 approved polices is selected, and the total processing time, in days, is recorded (and stored in Insurance):
73
19
16
64
28
31
90
60
56
22
18
45
48
17
91
92
63
50
51
69
a. In the past, the mean processing time was 45 days. At the 0.05 level of significance, is there evidence that he mean processing tiem has changed from 45 days?
b. What assumption about the population distribution is needed in order to conduct the t test in (a).
c. Construct a boxplot or a normal probability plot to evaluate the assumption made in (b).
d. Do you think that the assumption needed in order to conduct the t test in (a) is valid? Explain.
the room temperature was 70 degrees F. One hour later the body temperature was 93.4 degrees. Estimate the time of death
b. Calculate the number of days with a demand for 3 days. Calculate the probability of two bottles per day
a cylindrical storage tank has a diameter of 18 feet and a height of 16 feet. what is the volume of the storage tank.
The Friendly Auto Mart sold seven of these trucks and has two of the new transmissions in stock. What is the probability that the auto dealer will need to order more new transmissions?
What is the pattern among this set of ordered pairs? (0, 4), (1, 0), (2, -4), (3, -8)
a coin was randomly drawn from a bag and then replaced. after 300 draws,it was found that 45 pennies, 76 nickles, 92 dimes, and 87 quarters had been drawn. estimate the probability of drawing a quarter.
Prove that the element K=k1+k2+....km is the center of the group ring R[G]. Let K1,....Kr be the conjugacy classes of G and for each Ki let Ki be the element of R[G] that is the sum of the members of Ki.
The height of a projectile fired vertically into the air (neglecting air resistance) at an initial velocity of 112 feet per second is a function of the time and is given by the equation f(x) = 112x - 16x2, where x represents the time. Find the hig..
You pay $6 to play a game where you will roll a die, with a payoff as follows: $8 for a 6, $7 for a 5, and $4 for any other result. What are your expected winnings? Is the game fair?
Sketch the graph from information.
1. in a random sample of 60 computers the mean repair costnbsp is 150 with a standard deviation of 36. construct a 99
For a buffet dinner, the restaurant charges $10.00 for one person, $20.00 for two people, $29.00 for three people, $37.00 for four people, $44.00 for five people, and so on. How much does a buffet dinner for 8 cost?
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