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[answered] A college basketball coach has 12 players on his team. Eigh


This class is for statistic. Can you completed this? It only has 10 questions and some are multiple choices. Thanks!




1. A college basketball coach has 12 players on his team. Eight

 

players are receiving scholarships, and four are not. The coach

 

decides to select a starting lineup by selecting five names out of

 

a bowl. The probability that 4 of 5 players selected are on

 

scholarship is _____. Record answer to three decimal places

 

(x.xxx)

 

2. A new strain of plant is evaluated and the following statistics are recorded.

 

Mean weight per plant = 15 pounds. Standard deviation = 1.75 pounds

 

(normally distributed). The experiment had 200 plants.

 

How many plants produced a yield between 13 and 16 pounds?

 

3. A random sample of 200 was selected to estimate the average

 

amount of time retired folks in Arizona listened to the radio during the

 

day. The sample mean was 110 minutes, and the standard deviation

 

was 30 minutes. The 95% confidence limits for the population mean

 

listening time are _____ and _____. Record the lower limit to one

 

decimal place (x.x).

 

4. Generally the Student t distribution is used when the sample size is

 

less than 30.

 

a. True

 

b. False

 

5. Use the following information for the next few questions:

 

Ho: mu1 = mu2

 

H1: mu1=\=mu2

 

n1=12 and n2=11

 

alpha = 0.05

 

The critical values of 't' are _____ and _____ based on the textbook

 

recommended simple way of determining the degrees of freedom.

 

Record only the lower limit to three decimal places (x.xxx).

 

6. Using the information from the previous question the null

 

hypothesis should be rejected if t-value = 1.99?

 

a. True

 

b. False

 

7. Two equal groups of seedlings, and equal in height, were selected for an experiment. One group of seedlings was fed Fertilizer A, and the

 

other group with Fertilizer B. The mean heights of the two groups of

 

seedlings, their standard deviations, and sample sizes are listed below.

 

Assume simple random sampling, independence, and normally

 

distributed data. Alpha = 0.025.

 

Sample

 

Size

 

Fertilizer A

 

Fertilizer B Mean Height (inches, Std Deviation (inches), Sample

 

12.92,

 

12.63, 0.25,

 

0.20, 15

 

13 What is the null hypothesis?

 

a.

 

b.

 

c.

 

d. Mu1=mu2

 

Mu1=\=mu2(is not equal to)

 

Mu1<mu2

 

Mu1>mu2 8. Using the data in the previous question, what is the critical t value

 

using the simplified textbook method and Tables when testing the

 

claim that Fertilizer A is significantly greater than Fertilizer B? Record

 

the answer to three decimal places (x.xxx).

 

9. Using the data from the previous question, what is the t-statistic

 

rounded off to one decimal place ? (x.x)

 

10. Using the data from above, Fertilizer A is significantly greater than

 

Fertilizer B using an alpha of 0.025?

 

a. True

 

b. False

 


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