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LuckyWell [14K]
3 years ago
8

For a confidence level of 85%, find the critical value for a normally distributed variable. The sample mean is normally distribu

ted if the population standard deviation is known.
Mathematics
1 answer:
const2013 [10]3 years ago
7 0

Answer:

The  value is  Z_{\alpha } =  1.439

Step-by-step explanation:

From the question we are told that

   The  confidence level is  C  =  85%  

Generally the level of significance is mathematically represented as

         \alpha =  (100 -  85 )\%

        \alpha =  0.15

Now from the normal distribution table  the critical value  of \alpha is  

     Z_{\alpha } =  1.439

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If a 3-pound bunch of bananas cost $1.50, how
LUCKY_DIMON [66]

Answer:

Approximately 3 bunches would equal $4.50. So you should be able to buy at least 4 bunches which would be 10 pounds

4 0
3 years ago
When Tomas simplified the expression -2.6 + (-5.4), he got 2.8. what mistake did Tomas likely make?
vladimir2022 [97]

Tomas used incorrectly the rule of signs, the expression should be simplified as follows:

-2.6 + (-5.4)

-2.6 -5.4 = 8

<h3></h3><h3>What mistake did Tomas likely make?</h3>

Here Tomas wants to perform an addition between two numbers:

-2.6 + (-5.4)

And the outcome that Tomas gets is:

-2.6 + (-5.4) = 2.8

Here his mistake seems to bee that he thought the second number was a positive number, and he solved the operation:

-2.6 + 5.4

So, he used wrong the rule of signs.

Remember that the rule of signs says that:

(-)*(+) = (+)*(-) = (-)

Using that, we can rewrite the original expression:

-2.6 + (-5.4)

to:

-2.6 - 5.4

Solving that, we get:

-2.6 - 5.4 = -8

Which is the outcome that Tomas would have gotten if he had used correctly the rule of signs.

If you want to learn more about the rule of signs:

brainly.com/question/13333620

#SPJ1

5 0
2 years ago
Which of the following is a possible measure of the area of a square rug?
ivolga24 [154]
I say B because if it's a square that means each side is equal...24 divided by four sides is 6 inches each
5 0
3 years ago
If 16 students and 6 large pieces of construction paper how much paper will each student receive
blagie [28]

Each student will get a boot up the anus

8 0
3 years ago
A dozen eggs cost 3.84 at this rate how much would 50 eggs cost
Zina [86]

Answer:

50 eggs would cost 16$

Step-by-step explanation:

A dozen eggs is 12. So for 4 dozen eggs, you get 48. 48 eggs is 15.36$. If you divide the 3.84 to 12, you will get the individual price for each egg. The individual price for each egg is .32 cents. You need to add 2 more eggs to the 4 dozen to get 50 eggs. You times .32 to 2 and you get .64. After that you add .64 to the price of the 4 dozen eggs and you will get 16$

Simple version:

dozen eggs =12, cost 3.84$

4 dozen eggs= 48, cost 15.36$

3.84$ divided by 12 = .32 cents (price of the individual egg)

Add two of the individual eggs together and add it to 15.36$

:)

5 0
2 years ago
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