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anzhelika [568]
3 years ago
6

A simple random sample of 85 is drawn from a normally distributed population, and the mean is found to be 146, with a standard d

eviation of 34. Which of the following values is outside the 99% confidence interval for the population mean? Use the table below to help you answer the question.
Remember, the margin of error, ME, can be determined using the formula mc026-1.jpg.
a) the value of 135 because it is not greater than 136.5
b) the value of 137 because it is greater than 136.5
c) the value of 138 because it is less than 153.2
d) the value of 154 because it is greater than 153.2
Mathematics
2 answers:
goldfiish [28.3K]3 years ago
6 0
The correct answer is a. the value of 35 because it is not greater than 136.5
bogdanovich [222]3 years ago
5 0

Answer:

a) the value of 135 because it is not greater than 136.5

Step-by-step explanation:

Given that

n = sample size =85

Mean = 146

std dev =34

Std error of sample = 34/sqrt 85

= 3.6878

99% z critical value = 2.58

Margin of error = ±9.515

Confidence interval lower bound = 146-9.515 = 136.485

                                 Upper bound = 146+9.515 =155.515

Hence we find that 135 is less than lower bound, hence 135 does not lie within 99% confidence interval

a) the value of 135 because it is not greater than 136.5

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6 0
3 years ago
A stadium has 50,000 seats. Seats in section A cost $30, seats in section B cost $24, and seats in section C cost $18. the numbe
svetoff [14.1K]

Answer:

Section A = 25,000 seats

Section B = 14,600 seats

Section C = 10,400 seats

Step-by-step explanation:

Total Seats = 50,000

Seats in Section A cost = $30

Seats in Section B cost = $24

Seats in Section C cost = $18

Total sales from the event = $1,287,600

No. of Seats in section A = No. seats in Section B + No. seats in Section C

A = B + C

or, 2A = 50,000

A = 25,000 seats @ $30/seat = $750,000

B + C = 25,000

24B + 18C = 537,600

24B + 18(25,000 - B) = 537,600

24B + 450,000 - 18B = 537,600

6B = 87600

B = 14,600

C = 10,400

Hence;

A = 25,000 seats

B = 14,600 seats

C = 10,400 seats

7 0
3 years ago
7. Find the sum or difference.<br> -2(d +1) + (6d +4)
Arturiano [62]

Answer:

Step-by-step explanation:

Sum

-2d + 1 + 6d + 4

Solving like terms

4d + 5

Difference

-2d + 1 - 6d - 4

-8d - 3

4 0
3 years ago
Ignore my 1st one!<br> Find the value of x.
elixir [45]
12^2+x^2=15^2
144+x^2=225
- 144 -144
=81= 9
X=9
7 0
2 years ago
Read 2 more answers
How do you get the number 5 with these numbers 2,3,6,8
NemiM [27]

Answer:

You add 2 and 3

Step-by-step explanation:

1.read the question it asks how to get 5 from 2,3,6,8

2.think.If you think about it 2 plus 3 equals 5

3.you have your answer

8 0
3 years ago
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