1. Which of the following sample sizes will produce a sampling distribution of t
ID: 2723306 • Letter: 1
Question
1. Which of the following sample sizes will produce a sampling distribution of the mean that is approximately normal?
a. 10%
b. 20%
c.30%
d. All of the above
2. Assume a normal distribution. The probability that a new drug will cure a certain disease is 0.6. It is administered to 100 percent. Find the probability that it will cure more than 75 patients. round to the hundreths place?
A. 0.6%
B.0.08%
C. 0.16%
D. 0.25%
3. EPA studies of the fuel consumption indicate compact mileage to be normally distributed with a mean of 25.1 and a standard deviation of 4mpg. Identify the excel ststament that will find the percentage of compact cars that get between 25 and 38 mpg?
A. 1[1-NORMSDIST(25) - NORMSDIST(38)] * 100
b. [1-nORMSDIST(-0.025) - nORMSDIST(3.225)]*100
C. [NORMSDIST (-0.025) + nORMSDIST(3.225)]*100
d. [Normsdist(25) -Normsdist(38)]*100
e. [Normsdist (-0.025) - Normsdist(3.225)] * 100
4. It is known that 10% of the customers in an electronic store purchase an MP3 player. A random sample of 30 customers is selected.Assume that the customers purchases are made independently. In this binomial distribution application,which excel statements will find the probability more than 10 customers who purchase an MP3 player in this electronics store?
A. = 1 - binomdist (10,30,10%,TRUE)
B. = 1-Binomdist (10,30,10%,False)
C. =BINOMIST(10,30,10%,TRUE)
D. =BINOMIST (10,30,10%,FALSE)
5. A medical association study shows that 20% of all Americans suffer from high blood pressure. Suppose that 10 Americans are randomly selected and each person is asked if he has high blood pressure. In this binomial distribution application, which Excel statement will find the probability of between 3 and 7 Americans inclusively, with high blood pressure?
A. = 1 - binomdist(3,7,10,20%,true)
B. = - binomdist ( 3, 7, 10, 20% , False)
C.= binomdist (3,10,20%,False) - Binomdist ( 7,10, 20%, False)
D. =Binomist (7,10,20%,true) - Binomdist(2,10,20%,True)
Hi please show working.
Explanation / Answer
Solution.
Q1.
d. All of the above.
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