The average amount of money spent for lunch per person in the college cafeteria is $6.57 and the standard deviation is $2.23. Suppose that 44 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N( b. What is the distribution of x? ¤ ~ N(| c. For a single randomly selected lunch patron, find the probability that this patron's lunch cost is between $6.95 and $7.33. d. For the group of 44 patrons, find the probability that the average lunch cost is between $6.95 and $7.33. e. For part d), is the assumption that the distribution is normal necessary? ONoOYes

The following frequency table shows the number of fires per month in a city. Complete the table entries to find the mean and standard deviation for this distribution. E Click the icon to view the table. Complete the table below. More Info (Type integers or decimals rounded to three decimal places as needed.) 21 Product, Number, Frequency, Product, Deviation, Deviation 2 2 (x-x) (x-x)²•f 21 f (x•f) (x-x)² Number, Frequency, Product, f Deviation, Deviation (x•f) (x-x) (x-x)² X-X 2 X-X 4. 3 1 6. 0. Ex-73D Print Done Help me solve this View an example Get more help - 99+

Please answer B, C, & D.

Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P, the 11th percentile. This is the bone density score separating the bottom 11% from the top 89%. Which graph represents P ? Choose the correct graph below. O A. O B. OD. P11 P11 P11 P11 The bone density score corresponding to P1 is (Round to two decimal places as needed.) Click to select your answer(s). APR tv MacBook Air F9 F10 LLA 20 F3 F6 F8 F4 F5 F1 F2 & #3 7 8. %24