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Hunter-Best [27]
3 years ago
9

What is the mean number of cakes jenny bakes in a month

Mathematics
2 answers:
tatiyna3 years ago
7 0
To find the mean <span>you add up all the numbers and then divide by the numbers you added by the numbers you already have </span>
Oliga [24]3 years ago
4 0

Answer:480

Step-by-step explanation: 460 was in August

320 was in September

440 was in October

560was in November

620 was in December

Add all together: 460+320+440+560+620=2400

2400:5(five months)=480

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Girl im on the same boat as you 
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A new phone system was installed last year to help reduce the expense of personal calls that were being made by employees. Befor
Leya [2.2K]

Using the normal distribution, it is found that there was a 0.9579 = 95.79% probability of a month having a PCE between $575 and $790.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 700, \sigma = 50.

The probability of a month having a PCE between $575 and $790 is the <u>p-value of Z when X = 790 subtracted by the p-value of Z when X = 575</u>, hence:

X = 790:

Z = \frac{X - \mu}{\sigma}

Z = \frac{790 - 700}{50}

Z = 1.8

Z = 1.8 has a p-value of 0.9641.

X = 575:

Z = \frac{X - \mu}{\sigma}

Z = \frac{575 - 700}{50}

Z = -2.5

Z = -2.5 has a p-value of 0.0062.

0.9641 - 0.0062 = 0.9579.

0.9579 = 95.79% probability of a month having a PCE between $575 and $790.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

3 0
1 year ago
Divide 8/12 to find equivalent fraction?
Phantasy [73]
If you divide 8 by 4, it comes to 2
If you divide 12 by 2, it comes to 3
That fraction is 2/3

The Fraction 10/15 is equal to 2/3 because...

If you divide 10 by 5, it comes to 2
If you divide 15 by 5, it comes to 3
5 0
3 years ago
Read 2 more answers
The perimeter of a swimmingpool is 78 feet. The difference between four times the length and the width is 73.5 feet. What are th
Marianna [84]

Answer:

Length is 22.5 ft

Width is 16.5 ft

Step-by-step explanation:

4L-w=73.5

4L=73.5+w

L=(73.5+w)/4

P=78

P=2L+2w

78=2[(73.5+w)/4]+2w

78=(73.5+w)/2+2w

78=(73.5+w+4w)/2

2•78=73.5+5w

156=73.5+5w

156-73.5=5w

82.5=5w

82.5/5=w

16.5=w

L=(73.5+w)/4

=(73.5+16.5)/4

=90/4

L=22.5

3 0
3 years ago
Matt tried to evaluate 49 x 24 using partial products. His work is shown below
KIM [24]

Answer:

step 5

Step-by-step explanation:

5 0
3 years ago
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