Astationery store wants to estimate the mean retail value of greeting cards that it has in its inventory. a random sample of 100 greeting cards indicates a mean value of $2.55 and a standard deviation of $0.44.a. asumming a normal distribution, construct a 95% confidence interval estimate of the mean value of all greeting cards in the store's inventory. b. suppose there were 2,500 greeting cards in the store's inventory. how are the results in (a) useful in assisting the store owner to estimate the total value of her inventory?

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

its 50 miles away from the starting point

think about the doctor who treated the major and the speaker in the short story "in another country." put yourself in the shoes of the doctor, and based on what you read in the story, write what you think his thoughts about the major and the speaker would be. use the following vocabulary in your response and change the form of these words as needed: detached resign withered

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21