Question

In: Statistics and Probability

A cashier at Carter’s cafeteria can total an average of 2.2 trays per minute. The probability...

A cashier at Carter’s cafeteria can total an average of 2.2 trays per minute.

The probability that the cashier will total between four and ten trays per minute is:

A)        0.9281

B)        0.8193

C)        0.1807

D)        0.3772

E)        0.0724

Solutions

Expert Solution

Option (E) 0.0724


Related Solutions

Customers arrive at a grocery store at an average of 2.2 per minute. Assume that the...
Customers arrive at a grocery store at an average of 2.2 per minute. Assume that the number of arrivals in a minute follows the Poisson distribution. Provide answers to the following to 3 decimal places. Part a) What is the probability that exactly two customers arrive in a minute? Part b) Find the probability that more than three customers arrive in a two-minute period. Part c) What is the probability that at least seven customers arrive in three minutes, given...
on average 5 people enter the retaurant per minute. what is the probability that more than...
on average 5 people enter the retaurant per minute. what is the probability that more than 25 people enter the restaurant in the next 4 minutes?
Mrs. Smith's reading class can read an average of 175 words per minute with a standard...
Mrs. Smith's reading class can read an average of 175 words per minute with a standard deviation of 20 words per minute. The bottom 6% of the class is to receive a special training session. What is the minimum number of words per minutes a student would need to read in order to get training?
The average amount of money spent for lunch per person in the college cafeteria is $5.67...
The average amount of money spent for lunch per person in the college cafeteria is $5.67 and the standard deviation is $2.76. Suppose that 45 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal placeswhere possible. What is the distribution of X ? X ~ N( , ) What is the distribution of ¯ x ? ¯ x ~ N( , ) For a single randomly selected lunch...
The average amount of money spent for lunch per person in the college cafeteria is $7.14...
The average amount of money spent for lunch per person in the college cafeteria is $7.14 and the standard deviation is $2.14. Suppose that 18 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal placeswhere possible. What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For a single randomly selected lunch patron, find the probability that this patron's lunch...
The average amount of money spent for lunch per person in the college cafeteria is $6.63...
The average amount of money spent for lunch per person in the college cafeteria is $6.63 and the standard deviation is $2.54. Suppose that 18 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal places where possible. What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For a single randomly selected lunch patron, find the probability that this patron's...
You have a dataset of the average number of chirps per minute for a sample of...
You have a dataset of the average number of chirps per minute for a sample of 30 crickets. You find that the mean number of chirps per minute is 40 and that the number of chirps per minute has a standard deviation of 5 chirps. You want to test that the mean number of chirps per minute for a cricket is greater than 38 using a significance level of .05. What is the value of your test statistic? Round your...
You want to understand sampling distribution. The average number of children per woman is 2.2 with...
You want to understand sampling distribution. The average number of children per woman is 2.2 with a standard deviation is .1. If you took a sample of 16 women, what is the probability that: The average of this group is less that 2.3? The average for this group is greater than 2.45? The average for this group lies between 2.15 and 2.4.                                                      (10) You are not sure if the mean value is correct but you believe that the standard deviation...
The average number of customers at a window of a certain bank per minute during banking...
The average number of customers at a window of a certain bank per minute during banking hours is four. Find the probability that during a given minute. i. No customers appear ii. Three or fewer customers
Customers arrive at a local grocery store at an average rate of 2 per minute. (a)...
Customers arrive at a local grocery store at an average rate of 2 per minute. (a) What is the chance that no customer will arrive at the store during a given two minute period? (b) Since it is a “Double Coupon” day at the store, approximately 70% of the customers coming to the store carry coupons. What is the probability that during a given two-minute period there are exactly four (4) customers with coupons and one (1) without coupons? (c)...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT