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Kipish [7]
3 years ago
13

A research study shows that the yearly cost of dental claims for virginia state employees with dental care as a part of their he

alth insurance has a distribution with a mean of $1200 and a standard deviation of $200. if a random sample of 25 virginia state employees with dental insurance is selected, what is the probability that the mean of the yearly dental claims for this sample is between $1175 and $1225?
Mathematics
1 answer:
Musya8 [376]3 years ago
3 0
The right answer is 50% .
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Please help! Really easy math, need it asap!!! It's in the picture
Dominik [7]

Answer:

answers are: (-1,-2), (1,2), (-1,5), (1,-5). in other words, option 2, 6, 7, and 8.

Step-by-step explanation:

hope it helps

3 0
3 years ago
When you buy an item on which sales tax is charged,the total cost is calculated by the formula T=P+s/100p where T is the total c
Gennadij [26K]

Given:

The formula for total cost is

T=p+\dfrac{s}{100}p

where, p is the price of item and s is the sales tax rate (as a percent).

You pay $14.77 for an item priced at $14.

To find:

The the tax rate.

Solution:

You pay $14.77 for an item priced at $14. So,

Total cost (T) = $14.77

Price of item (p) = $14

Putting T=14.77 and p=14 in given formula, we get

14.77=14+\dfrac{s}{100}(14)

14.77-14=\dfrac{s}{100}(14)

0.77=\dfrac{s}{100}(14)

Multiply both sides by 100.

77=14s

Divide both sides by 14.

\dfrac{77}{14}=s

5.5=s

Therefore, the tax rate is 5.5%.

7 0
3 years ago
A middle-school art teacher, Ms. Velez, and her students are turning the school’s gymnasium into a student art museum for the da
boyakko [2]

Answer:19 to the 5th power

Step-by-step explanation:

U got to count all the zeros and that will be the number u put on top plus 19

3 0
3 years ago
Box and whisker box plot
Rainbow [258]
I think it is negatively skewed
7 0
3 years ago
Read 2 more answers
Can anybody help me with this one ??
leva [86]
A=7 b =4 and c=9 Because the 7 is the base of the number
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3 years ago
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