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elena55 [62]
2 years ago
15

Will mark brainliest !!!

Mathematics
1 answer:
Wittaler [7]2 years ago
5 0

Answer:

just mark points it is very easy

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The operations manager of a large production plant would like to estimate the mean amount of time a worker takes to assemble a n
xz_007 [3.2K]

Answer:

(15,595, 16,805)

Step-by-step explanation:

We have to:

m = 16.2, sd = 3.75, n = 150

m is the mean, sd is the standard deviation and n is the sample size.

the degree of freedom would be:

n - 1 = 150 - 1 = 149

df = 149

at 95% confidence level the t is:

alpha = 1 - 95% = 1 - 0.95 = 0.05

alpha / 2 = 0.05 / 2 = 0.025

now well for t alpha / 2 (0.025) and df (149) = t = 1,976

the margin of error = E = t * sd / (n ^ (1/2))

replacing:

E = 1,976 * 3.75 / (150 ^ (1/2))

E = 0.605

The 95% confidence interval estimate of the popilation mean is:

m - E <u <m + E

16.2 - 0.605 <u <16.2 + 0.605

15,595 <u <16,805

(15,595, 16,805)

5 0
3 years ago
An experiment consists of rolling a six-sided die to select a number between 1 and 6 and drawing a card at random from a set of
Readme [11.4K]
<span>The event definition that corresponds to exactly one outcome of the experiment is that both numbers are 5s.</span>
5 0
2 years ago
Read 2 more answers
Abdul earns $13.00 in interest each month for six months. How much interest will Abdul have earned at the end of six months?
ipn [44]

answer:

78

<em>-- please mark the brainliest and click the thanks button if correct :)</em>

<em></em>

8 0
2 years ago
Read 2 more answers
A farmer has 5 times as many cows as horses.
Assoli18 [71]

Answer:

The correct answer is !40 cows and 28 Horses

Step-by-step explanation:

h+5h=168

6h=168

h=168/6

h=28 horses.

5*28=140 cows.

Proof:

28=140=168

168=168

7 0
3 years ago
M divided by 6 = 21 so what does m equal
loris [4]

Answer:

Step-by-step explanation:

M equals 3.5

6 0
2 years ago
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