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Kitty [74]
3 years ago
11

i have 2 years left of school im not tryna fail I'm tryna get out off this Hail hold so could someone help

Mathematics
2 answers:
jekas [21]3 years ago
8 0

Answer:

It’s B

Step-by-step explanation:

e-lub [12.9K]3 years ago
7 0

Answer:

i think the answer is c because it has to do with the congruence of porportional relationships

Step-by-step explanation:

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A toy manufacturer wants to know how many new toys children buy each year. A sample of 1492 children was taken to study their pu
julia-pushkina [17]

By assuming the standard deviation of population 2.2 the confidence interval is 8.67 toys,8.94 toys.

Given sample size of 1492 children,99% confidence interval , sample mean of 8.8, population standard deviation=2.2.

This type of problems can be solved through z test and in z test we have to first find the z score and then p value from normal distribution table.

First we have to find the value of α which can be calculated as  under:

α=(1-0.99)/2=0.005

p=1-0.005=0.995

corresponding z value will be 2.575 for p=0.995 .

Margin of error=z*x/d

where x is mean and d is standard deviation.

M=2.575*2.2/\sqrt{1492}

=0.14

So the lower value will be x-M

=8.8-0.14

=8.66

=8.67 ( after rounding)

The upper value will be x+M

=8.8+0.14

=8.94

Hence the confidence interval will be 8.67 toys and 8.94 toys.

Learn more about z test at brainly.com/question/14453510

#SPJ4

8 0
2 years ago
Graham's monthly bank statement showed the following deposits and withdrawals:
emmainna [20.7K]
($94.11 + $52.75) + (-$25.20 + -$22.04 + -$8.50) =
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$94.12 is the account balance at the end of the month. 
8 0
3 years ago
Read 2 more answers
The tallest tree in the United States is a
erastovalidia [21]
Redwood hope this helps
6 0
2 years ago
666 erasers cost \$6.60$6.60dollar sign, 6, point, 60.
olga nikolaevna [1]
E=3.33
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3 years ago
5) Linda picked a basket of apples. She gave half of the apples to a neighbor, then 10 apples to her mother, then half of the re
mihalych1998 [28]

Answer:

is it 8 apples to her mother or 10 since I had this exact problem?

Step-by-step explanation:

3 0
3 years ago
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