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Ksju [112]
2 years ago
9

The price of a notebook has risen to $3.90 today, Yesterday's price was $3.40. Find the percentage increase. Round the answer to

the nearest tenth of a percent
Mathematics
1 answer:
andrew-mc [135]2 years ago
4 0
It went up 1.15 percent.
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You have a normal distribution of hours per week that music students practice. The mean of the values is 8 and the standard devi
Aleks04 [339]

Answer:

25%

Step-by-step explanation:

Since Normal Distribution is symmetrical Distribution and 5.3 and 10.7 are both 2.7 below and 2.7 above the mean respectively.

So, % of students less than 5.3 hours per week is 25%

5 0
3 years ago
8. A company makes electronic components for TV's. 95% pass final inspection (and 5% fail and need to be fixed). 120 components
Taya2010 [7]

Using the binomial distribution, it is found that the variance of the number that pass inspection in one day is 5.7.

For each component, there are only two possible outcomes, either it passes inspection, or it does not. The probability of a component passing inspections is independent of any other component, hence, the binomial distribution is used to solve this question.

Binomial probability distribution

Probability of <u>exactly x successes on n repeated trials, with p probability</u>, and has variance given by:

V(X) = np(1 - p)

In this problem:

  • 95% pass final inspection, hence p = 0.95
  • 120 components are inspected in one day, hence n = 120.

The variance is given by:

V(X) = np(1 - p) = 120(0.95)(0.05) = 5.7

The variance of the number that pass inspection in one day is 5.7.

To learn more about the binomial distribution, you can take a look at brainly.com/question/24863377

3 0
2 years ago
A linear model for the situation below passes through the origin. Find the missing value. Round to the nearest ten if necessary.
BARSIC [14]
17.55 to buy 13 apples
4 0
3 years ago
Read 2 more answers
What is 8 2/10 minus 4 1/3
Alik [6]

Answer:

Convert the mixed numbers to improper fractions, then find the LCD and combine.

Exact Form:

58 /15

Decimal Form:

3.8 6

Mixed Number Form:

3  13 /15

Step-by-step explanation:

6 0
3 years ago
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A. Determine the value of an account in which a person invested $6000 for 12 years at an annual rate of 9% compounded annually (
Sliva [168]

Answer:

16875.98

Step-by-step explanation:

6000(1+(0.09/1)^1*12 = 16875.98

8 0
2 years ago
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