Note: It is recommended that you save your response as you complete each question. |
Question 1 options:
A survey of American Society of Investors found 30% of individual investors have used a discount broker.
In a random sample of nine individuals, what is the probability:
a. Exactly two of the sample individuals have used a discount broker? P(x = 2)
Enter answers to 4 decimal places with 0 to the left of the decimal point.
b. None of the 9 individuals have used a discount broker. P(X = 0)
Enter answers to 4 decimal places with 0 to the left of the decimal point.
c. Two or three individuals have used a discount broker. P( 2 <= X <= 3)
Enter answers to 4 decimal places with 0 to the left of the decimal point.
d. What is the mean and standard deviation for this distribution?
Enter each answer to 2 decimal places.
Save
Question 2 options:
A.C. Nielesen Company provides information to organizations advertising on television.Prior research indicates that adult Americans watch an average of 6.0 hours per day of television. The standard deviation is 1.5 hours. Assume the time distribution is normally distributed.
What is the probability that a randomly selected adult Americans watches 5 or more hours of television per day?
Enter answer rounded to 4 decimal places with a 0 to the left of the decimal point.
What is the probability that a randomly selected adult Americans watches between 7 and 8 hours of television per day?
Enter answer rounded to 4 decimal places with a 0 to the left of the decimal point.
For how many hours per day must an adult American watch television in order to be in the top 5% ofadult American television watchers?
Enter answer rounded to 1 decimal place.
In a sample of 25 randomly selected adult Americans what is the probability that the average time for watching television per day will be equal to or exceeds 6.5 hours?
Enter answer rounded to 4 decimal places with a 0 to the left of the decimal point.
Save
Question 3 options:
The owner of the Britten's Egg Farm wants to estimate the mean number of eggs produced per chicken. A representative random sample of 20 chickens show they produce an average of 25 eggs per month with a standard deviation of 2 eggs per month. The distribution is known to be symmetrical and is close enough to normal to be treated as a normal distribution.
Answer the following questions related to and calculating a 90% confidence interval for the mean number of eggs produced per chicken on the Britten's Egg Farm.
What is the point estimate of the mean number of eggs produced per chicken?
Enter answer with 0 decimal places (integer).
What is the applicable distribution for calculating the 90% confidence interval?
a Uniform distribution
b Normal distribution
c t distribution
d Chi Square distribution
Answer this question by entering the appropriate letter.
What is the degrees of freedom (dF) for this problem. Enter Na if dF is not required by the applicable distribution.
Calculate the margin of error for the 90% confidence interval for the mean amount of eggs laid per month on the Britten's Egg Farm.
Enter answer rounded to 3 decimal points.
The 90% conference interval for the mean number eggs produced per month is:
Enter the lower and upper limits for the conference interval by entering the lower limit first.
Rounded each conference limit to 3 decimal points.
Prior to this study the owner of the Britten's Egg Farm Egg Farm believed the mean amount off eggs produced per month on his farm was 30.
Does the study support his belief with 90% confidence?
a Yes. The mean amount of eggs produced per month on his farm is 30 per month because the number 30 is not contained in the confidence interval.
b Yes. The mean amount of eggs produced per month on his farm is 30 per month because the number 30 is contained in the confidence interval.
c No. The mean amount of eggs produced per month on his farm is not 30 per month because the number 30 is not contained in the confidence interval.
d No. The owner can not comment on the mean amount of eggs produced per month on his farm because the confidence interval is based upon a sample.
Enter the correct answer by selecting and entering the appropriate letter.
Save
Question 4 options:
The waiting time for customers at MacBerger Restaurants follows a normal distribution with a population standard deviation of 1 minute.
At the Warren Road MacBerger, the quality assurance department sampled 49 customers and found that the mean waiting time was 2.75 minutes.
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes.
The Null Hypothesis is:
a The waiting time for customers at MacBerger Restaurants is equal to _______.
b The waiting time for customers at MacBerger Restaurants is greater than _______.
c The waiting time for customers at MacBerger Restaurants is less than _______.
d The waiting time for customers at MacBerger Restaurants is not equal to _______.
Enter the correct answer by selecting the appropriate letter and entering the correct number. Enter number to the same precision as presented in the question.
The Alternate Hypothesis is:
a The waiting time for customers at MacBerger Restaurants is equal to ______.
b The waiting time for customers at MacBerger Restaurants is greater than ______.
c The waiting time for customers at MacBerger Restaurants is less than ______.
d The waiting time for customers at MacBerger Restaurants is not equal to ______.
Enter the correct answer by selecting the appropriate letter and entering the correct number. Enter number to the same precision as presented in the question.
The appropriate distribution is:
a Uniform Distribution
b Normal Distribution
c t Distribution
d Chi Square Distribution
The Hypothesis test is:
a Left tail test
b Right tail test
c Two tail test
Enter the appropriate letters for answering the questions in the same order in which the questions are asked.
Select the letter for the appropriate decision rule. Enter the appropriate letter and then the critical value.
Decision:
a Ha hypothesis: If the test statistic is equal to or greater than the critical value which is _____.
b Ha hypothesis: If the test statistic is equal to or less than the critical value which is _____.
c Ha hypothesis: If the absolute value of the test statistic is equal to or greater than the critical value which is _____.
The numerical value of the test statistic is:
Hypothesis Test Decision:
a Null Hypothesis: Do not reject the null hypothesis. The data does not support the Alternate Hypothesis.
b Alternate Hypothesis: Reject the null hypothesis. The data supports the Alternate Hypothesis.
c The waiting time for customers at MacBerger Restaurants cannot be determined because the data set is a sample.
Enter the correct answer by selecting the appropriate letter.
Save
Subject | Mathematics |
Due By (Pacific Time) | 10/04/2015 07:00 pm |
Tutor | Rating |
---|---|
pallavi Chat Now! |
out of 1971 reviews More.. |
amosmm Chat Now! |
out of 766 reviews More.. |
PhyzKyd Chat Now! |
out of 1164 reviews More.. |
rajdeep77 Chat Now! |
out of 721 reviews More.. |
sctys Chat Now! |
out of 1600 reviews More.. |
sharadgreen Chat Now! |
out of 770 reviews More.. |
topnotcher Chat Now! |
out of 766 reviews More.. |
XXXIAO Chat Now! |
out of 680 reviews More.. |