Independent random samples of professional football and basketball players gave the following information. Heights (in ft) of pro football players: x 1; n 1 = 45 6.33 6.52 6.50 6.25 6.50 6.33 6.25 6.17 6.42 6.33 6.42 6.58 6.08 6.58 6.50 6.42 6.25 6.67 5.91 6.00 5.83 6.00 5.83 5.08 6.75 5.83 6.17 5.75 6.00 5.75 6.50 5.83 5.91 5.67 6.00 6.08 6.17 6.58 6.50 6.25 6.33 5.25 6.65 6.50 5.81 Heights (in ft) of pro basketball players: x 2; n 2 = 40 6.05 6.55 6.25 6.58 6.25 5.92 7.00 6.41 6.75 6.25 6.00 6.92 6.84 6.58 6.41 6.67 6.67 5.75 6.25 6.25 6.50 6.00 6.92 6.25 6.42 6.58 6.58 6.08 6.75 6.50 6.83 6.08 6.92 6.00 6.33 6.50 6.58 6.84 6.50 6.58 (a) Use a calculator with mean and standard deviation keys to calculate x1, s 1, x2, and s 2. (Round your answers to three decimal places.) x1 = s 1 = x2 = s 2 = (b) Let μ1 be the population mean for x 1 and let μ2 be the population mean for x 2. Find a 90% confidence interval for μ1 – μ2. (Round your answers to three decimal places.) lower limit upper limit

Independent random samples of professional football and basketball players gave the following information. Heights (in ft) of pro football players: x 1 ; n 1 = 45 6.33 6.52 6.50 6.25 6.50 6.33 6.25...

Independent random samples of professional football and basketball players gave the following information.

Heights (in ft) of pro football players:
x
₁;
n
₁
= 45

6.33	6.52	6.50	6.25	6.50	6.33	6.25	6.17	6.42	6.33
6.42	6.58	6.08	6.58	6.50	6.42	6.25	6.67	5.91	6.00
5.83	6.00	5.83	5.08	6.75	5.83	6.17	5.75	6.00	5.75
6.50	5.83	5.91	5.67	6.00	6.08	6.17	6.58	6.50	6.25
6.33	5.25	6.65	6.50	5.81

Heights (in ft) of pro basketball players:
x
₂;
n
₂
= 40

6.05	6.55	6.25	6.58	6.25	5.92	7.00	6.41	6.75	6.25
6.00	6.92	6.84	6.58	6.41	6.67	6.67	5.75	6.25	6.25
6.50	6.00	6.92	6.25	6.42	6.58	6.58	6.08	6.75	6.50
6.83	6.08	6.92	6.00	6.33	6.50	6.58	6.84	6.50	6.58

(a) Use a calculator with mean and standard deviation keys to calculate x₁,
s
₁, x₂, and
s
₂. (Round your answers to three decimal places.)

x₁ =
s ₁ =
x₂ =
s ₂ =

(b) Let μ₁
be the population mean for
x
₁
and let μ₂
be the population mean for
x
₂. Find a 90% confidence interval for μ₁
– μ₂. (Round your answers to three decimal places.)

lower limit
upper limit

Jun 10, 2022

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Independent random samples of professional football and basketball players gave the following information. Heights (in ft) of pro football players: x 1 ; n 1 = 45 6.33 6.52 6.50 6.25 6.50 6.33 6.25...

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