Ask question

Ask question

All categories

3 years ago

10

The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 25 hours. Suppose that you wanted the tot

al width of the two-sided confidence interval on the mean life to be six hours at 95% confidence. What sample size should be used?

1 answer:

Temka [501]3 years ago

4 0

Answer:

Step-by-step explanation:

You might be interested in

Hey! Can somebody please help my friend with 5,211 ÷ 6? I need to have a picture of the work if somebody can please do that!

Marysya12 [62]

Answer:

868.5

Step-by-step explanation: If u devide by groups, you can find the answer.

6 0

3 years ago

Read 2 more answers

Find the output, k, when the input, t, is –7.<br> k = 10t -19

kupik [55]

Answer:

k = - 89

Step-by-step explanation:

To calculate the output, substitute t = - 7 into the equation for output, that is

k = 10(- 7) - 19 = - 70 - 19 = - 89

7 0

3 years ago

Which linear inequality is represented by the graph?

gulaghasi [49]

Answer:

Y < 3x+2

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Greg made pudding every weekend. The more times he made pudding, the more practice he gained. The time he took to make the same

VashaNatasha [74]

After Greg makes the pudding 1 time, it takes him $f(1)=2(0.8) ^{1}=1.6$ hours to make it.

After Greg makes the pudding 2 times, it takes him $f(2)=2(0.8) ^{2}=1.28$ hours to make it

After Greg makes the pudding 2 times, it takes him $f(3)=2(0.8) ^{3}=1.024$ hours to make it

so The function is $f(x)=2(0.8) ^{x}$

Answer: f of x equals 2 multiplied by 0.8 to the power of x

4 0

3 years ago

A=14+(n-1)(8) solve please step by step

Rashid [163]

Answer:

$a = 8n + 6$

Step-by-step explanation:

<u>Step 1: Distribute</u>

<u /> $a = 14 + (n - 1)(8)$

$a = 14 + (8 * n) + (8 * -1)$

$a = 14 + 8n - 8$

$a = 8n + 6$

Answer: $a = 8n + 6$

5 0

3 years ago

Read 2 more answers