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Help!!! i can’t solve my statistics homework!

In N.B., 48% of all teenagers own a skateboard and 39% of ALL TEENAGERS OWN A SKATEBOARD AND ROLLER BLADES. wHAT IS THE PROBABILITY THAT A TEENAGER OWNS ROLLER BLADES GIVEN THAT THE TEENAGER OWNS A SKATEBOARD?

1 ) .

The “Lena Bank” sells a form of life insurance called “Lena life insurance (LLI)”. The approval process for the life insurance consists of underwriting, which includes a review of application, a medical information bureau check, possible request for additional medical information and medical exams, and a policy completion stage during which the policy pages are generated and sent to the bank for delivery. The ability to deliver approved policy to customers in timely manner is critical to the profitability of this service

72 19 16 61 28 28 31 70 60 56 31 56 22 17 18 45 48 17 17 17 71 52 63 50 51 69 16

to the bank. During a period of one month, a random sample of 27 approved policies was selected, and the following processing times in days were recorded

Compute the mean, median, mode, first quartile and third quartile. Also, compute the range, Inter-quartile range, Variance, Mean Deviation and Coefficient of variation. Based on your findings, what would you tell a customer who enters the bank to purchase this type of insurance policy and asks you how long the approval process takes?

Two cards were drawn, without replacement, from a pack of 52 cards. What is the probability that they are both Kings or both Queens?

anybody pls answer this question

a distribution consists of 3 components with frequencies 3, 4 and 5 and having means 2, 5.5 and 10. find mean of combined distribution?

We have , x values are 2,5.5,10 and frequencies(f) 3,4,5 , N= total frequency =3+4+5 =12

Mean =∑xf/N =(2*3+5.5*4+10*5)/12 =(6+22+50)/12 =6.5

mean of combined disribution is 6.5

I am in my third week of class and this Statistics class is draining. I need HELP! PLEASE

The “Lena Bank” sells a form of life insurance called “Lena life insurance (LLI)”. The approval process for the life insurance consists of underwriting, which includes a review of application, a medical information bureau check, possible request for additional medical information and medical exams, and a policy completion stage during which the policy pages are generated and sent to the bank for delivery. The ability to deliver approved policy to customers in timely manner is critical to the profitability of this service72 19 16 61 28 28 31 70 60 56 31 56 22 17 18 45 48 17 17 17 71 52 63 50 51 69 16to the bank. During a period of one month, a random sample of 27 approved policies was selected, and the following processing times in days were recordedCompute the mean, median, mode, first quartile and third quartile. Also, compute the range, Inter-quartile range, Variance, Mean Deviation and Coefficient of variation. Based on your findings, what would you tell a customer who enters the bank to purchase this type of insurance policy and asks you how long the approval process takes?The “Lena Bank” sells a form of life insurance called “Lena life insurance (LLI)”. The approval process for the life insurance consists of underwriting, which includes a review of application, a medical information bureau check, possible request for additional medical information and medical exams, and a policy completion stage during which the policy pages are generated and sent to the bank for delivery. The ability to deliver approved policy to customers in timely manner is critical to the profitability of this service72 19 16 61 28 28 31 70 60 56 31 56 22 17 18 45 48 17 17 17 71 52 63 50 51 69 16to the bank. During a period of one month, a random sample of 27 approved policies was selected, and the following processing times in days were recordedCompute the mean, median, mode, first quartile and third quartile. Also, compute the range, Inter-quartile range, Variance, Mean Deviation and Coefficient of variation. Based on your findings, what would you tell a customer who enters the bank to purchase this type of insurance policy and asks you how long the approval process takes?

The “Lena Bank” sells a form of life insurance called “Lena life insurance (LLI)”. The approval process for the life insurance consists of underwriting, which includes a review of application, a medical information bureau check, possible request for additional medical information and medical exams, and a policy completion stage during which the policy pages are generated and sent to the bank for delivery. The ability to deliver approved policy to customers in timely manner is critical to the profitability of this service

72 19 16 61 28 28 31 70 60 56 31 56 22 17 18 45 48 17 17 17 71 52 63 50 51 69 16

to the bank. During a period of one month, a random sample of 27 approved policies was selected, and the following processing times in days were recorded

Compute the mean, median, mode, first quartile and third quartile. Also, compute the range, Inter-quartile range, Variance, Mean Deviation and Coefficient of variation. Based on your findings, what would you tell a customer who enters the bank to purchase this type of insurance policy and asks you how long the approval process takes?

One of the researchers working for you at the tech company delivers some data you asked for about associations between consumers and their likelihood of purchasing a new tablet. The two variables of particular interest are: 1) previous number of tech gadgets owned and 2) likelihood of purchasing a new tablet. The researcher tells you that the Pearson Product Moment Correlation Coefficient is .59 for these two variables and is significant at the p < .01 level. You have a briefing with management now, and they don’t want to hear the “statistics jumble” that they pay you to sort through. What number or indicator could you present to them that would clearly explain this relationship? Consider how researchers interpret an r statistic and what we learned was the most precise method of doing so.

Stephen Smith is working as a street-vendor who is selling Georgia water melons

on his beat-up pickup truck. He found that the weight of a water melon has a normal distribution

with the mean = 9.5 pounds and the standard deviation = 4 pounds. If he loads 100 water

melons onto his truck, what is the probability that the total weight of the 100 water melons will

exceed his small pickup truck’s maximum load capacity of 1,000 pounds?

Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women. One facet of the study involved the mean listening time. It was discovered that the mean listening time for men was 27 minutes per day. The standard deviation of the sample of the 10 men studied was 12 minutes per day. The mean listening time for the 11 women studied was also 27 minutes, but the standard deviation of the sample was 15 minutes. At the .10 significance level, can we conclude that there is a difference in the variation in the listening times for men and women? (Round your answer to 3 decimal places.)

2 letters are chosen radomly from the word STATISTICS write the sample space there are 45 sample space

Can anyone here please help me solve the problem below? Gonna be very grateful.

1. The manager of a factory concluded that an assembly line worker is considered efficient if he/she can process more than 500 pieces per day. This manager surveyed 25 employees. The sample mean(Y bar) is 485 and the estimated sample standard deviation (S) is 35.

(a) carry out a test of whether or not there is evidence supporting the conjecture that workers in this factory are efficient at 5% level. Specify the null and alternative hypothesis, test statistic, decision rule and whether or not you reject the null hypothesis.

(b) What would a type I error be in this example?

(c) Compute the p-value for this test.

Thank you!