2. The monthly salaries of the employees in a retail store had a mean value of $3500 and standard deviation of $250. At the end of the year they all received an increase of $100. Write down the new mean and the new standard deviation. mean ? = Stan darad deviation =?

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Author:Amos Gilat
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How to solve number 2?

Sarai Thad
2
1. Gal asked 60 people how much money they spent at the last restaurant they ate at. The
so
cal
Name
Hr.
table shows his results.
a. Write down the modal class.
Cost of dinner, UK£ Frequency
30<C<4o
115
10sc<20
b. Find an estimate for the standard
25
20sc<30
12
deviation. Comment on the result.
35
30 <c<40
28
Ox = l14.1
I used the calculator
45
%3D
40<c<50
10
ら5
50<c<60
4.
C. Find the interquartile range of the data.
Q3-Q,=IQR
60-20= 30
2. The monthly salaries of the employees in a retail store had a mean value of $3500 and
standard deviation of $250. At the end of the year they all received an increase of $100.
Write down the new mean and the new standard deviation.
mean ? =
stan dard
deviation =?
Nuria recorded the number of words in a sentence in one chapter of her favorite book.
Transcribed Image Text:Sarai Thad 2 1. Gal asked 60 people how much money they spent at the last restaurant they ate at. The so cal Name Hr. table shows his results. a. Write down the modal class. Cost of dinner, UK£ Frequency 30<C<4o 115 10sc<20 b. Find an estimate for the standard 25 20sc<30 12 deviation. Comment on the result. 35 30 <c<40 28 Ox = l14.1 I used the calculator 45 %3D 40<c<50 10 ら5 50<c<60 4. C. Find the interquartile range of the data. Q3-Q,=IQR 60-20= 30 2. The monthly salaries of the employees in a retail store had a mean value of $3500 and standard deviation of $250. At the end of the year they all received an increase of $100. Write down the new mean and the new standard deviation. mean ? = stan dard deviation =? Nuria recorded the number of words in a sentence in one chapter of her favorite book.
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