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timurjin [86]
3 years ago
15

A manager records the repair cost for 4 randomly selected TVs. A sample mean of $88.46 and standard deviation of $17.20 are subs

equently computed. Determine the 99% confidence interval for the mean repair cost for the TVs. Assume the population is approximately normal. Step 1 of 2 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Mathematics
1 answer:
timurjin [86]3 years ago
5 0

Answer:

NO WAY ITS INSANE

Step-by-step explanation:

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How to solve this equation 2√4
guapka [62]

Answer:

4

Step-by-step explanation:

First things first we will need to solve the square root.

\sqrt{4} = 2

We can check this by squaring 2.

2^{2} = 2 x 2 = 4

Now that we have solved the square root, we are left with 2(2). 2 x 2.

2(2) = 4

2\sqrt{4} = ?

2(2) = ?

4

6 0
3 years ago
Find the volume of a pyramid with a square base, where the side length of the base is
ValentinkaMS [17]

Answer:

<h2>1529.4 m³</h2>

Step-by-step explanation:

Volume of a pyramid can be found by using the formula

v =  \frac{1}{3}  \times a \times h \\

a is the area of the base

h is the height

Since the base is a square we have

v =  \frac{1}{3}  \times  {15.3}^{2}  \times 19.6 \\  = 78.03 \times 19.6 \\  = 1529.388

We have the final answer as

<h3>1529.4 m³</h3>

Hope this helps you

3 0
3 years ago
Eighty students are going on a field trip.the total cost includes 2 bus rentals that cost 960 and 10$ per student for lunch. Wha
Westkost [7]
80 students. 
2 bus rentals - $960.
$10 per student for lunch.

so we do $960 / 80 = which is $12.

so each student pays $12 for a bus rental + $10 for lunch so all together for the whole field trip it's $22.
6 0
3 years ago
Find the product.<br> (3y-2)(3y+2)
VashaNatasha [74]

Answer:

=9y^2−4

Step-by-step explanation:

3y−2)(3y+2)

=(3y+−2)(3y+2)

=(3y)(3y)+(3y)(2)+(−2)(3y)+(−2)(2)

=9y^2+6y−6y−4

=9y^2−4

7 0
4 years ago
Read 2 more answers
What’s the answer????
zheka24 [161]

Answer:

It's so dark! There are some words I can't see.

3 0
3 years ago
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