The weights of four randomly and independently selected bags of potatoes labeled 20.0 pounds were found to be 20.8, 21.3, 20.7

Question

3 years ago

15

, and 21.2 pounds. Assume Normality. Answer parts (a) and (b) below. a. Find a 95% confidence interval for the mean weight of all bags of potatoes.

1 answer:

Amanda [17] · Answer 1 · 2022-04-06T14:25:29+03:00

Answer:

(20.532 , 21.468)

Step-by-step explanation:

Enter data into L₁

CL= 0.95

df= 3

Distribution: xbar ~ t₃

Calculator commands (for TI only): [Stat],[TESTS],[TInterval],[Data],(List: L₁),(Freq:1),(C-Level:0.95),[Calculate]

Confidence interval (20.532,21.468)

We can conclude that the true population mean for bags of potatoes labeled 20.0 pounds is between (20.532,21,468) with a 95% confidence level.

The weights of four randomly and independently selected bags of potatoes labeled 20.0 pounds were found to be 20.8​, 21.3​, 20.7