1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anuta_ua [19.1K]
3 years ago
12

The Marine Corp is ordering hats for all the new recruits for the entire next year. Since they do not know the exact hat sizes t

hey will use statistics to calculate the necessary numbers, assume the numbers are normally distributed. This is the data from a sample of the previous recruits: 7.2, 6.8, 6, 6.9, 7.8, 6.2, 6.4, 7.2, 7.4, 6.8, 6.7, 6, 6.4, 7, 7, 7.6, 7.6, 6, 6.8, 6.4
a. Display the data in a line plot and stem-and-leaf plot. (These plots don’t need to be pretty; just make sure I can make sense of your plots.) Describe what the plots tell you about the data.
b. Find the mean, median, mode, and range.
c. Is it appropriate to use a normal distribution to model this data?
d. Suppose that the Marine Corp does know that the heights of new recruits are approximately normally distributed with a mean of 70.5 inches and a standard deviation of 1.5 inches. Use the mean and standard deviation to fit the new recruit heights to a normal distribution and estimate the following percentages. d1. What percent of new recruits would be taller than 72 inches?
d2. What percent of new recruits would be shorter than 67.5 inches?
d3. What percent of new recruits would be between 69 and 72 inches?
d4. Between what two heights would capture 95% of new recruits??
Mathematics
1 answer:
aliya0001 [1]3 years ago
5 0
B I think sorry if I'm wrong
You might be interested in
PLEASE THIS IS MY LAST TRY PLEASE
FrozenT [24]
Hope this helps :) good luck!!!

5 0
2 years ago
Read 2 more answers
Real estate values in a town are increasing at a rate of 9% per year.
mina [271]

Answer:

$887,761.38

Step-by-step explanation:

The principal amount the home is valued is $375,000 and it increases at a rate of 9% a year which is 0.09 and the amount of time it grew is 10 years. Therefore:

A_{final}=375000(1+0.09)^{10}=375000(1.09)^{10}=887761.38

After 10 years the house is worth $887,761.38 if this trend continues

6 0
3 years ago
Read 2 more answers
66768 in scientific notation
77julia77 [94]

6.6766*10^4 is that number in scientific notation

5 0
3 years ago
Name the quadrant in which the angle lies the
Brums [2.3K]

Answer:

quad 3

Step-by-step explanation:

Subtract multiples of 360

944 -360

584

584 -360

224

0-90 is in quad 1

91 -180 is in quad 2

181 - 270 is in quad 3

4 0
3 years ago
Which expression is equivalent to -3(2b + 9) + 5(-5b + 6)?​
Nata [24]

Answer:

C is correct

Step-by-step explanation:

-3(2b+9) + 5 (-5b+ 6)

-6b-27 -25b +30

-31b+3

7 0
2 years ago
Other questions:
  • elena finds that the area of a house on a scale drawing is 25 square inches. the actual area of the house is 2,025 square feet.
    15·2 answers
  • there are 6 pure spectral color : red,orange,yellow, green,blue, and violet. some animals cannot see orange or red. what fractio
    9·1 answer
  • A student government organization is selling Christmas trees as a fundraiser. On Friday, they sold 5 noble fir trees and 3 dougl
    12·1 answer
  • A rectangle with an area of 4/7 meters squared is dilated by a factor of 7. What is the area of the dilated rectangle?
    14·1 answer
  • The height of Liliana's picture frame is 18 inches. The frame and blue matting take up 4.5 inches of the height. Liliana wants t
    10·2 answers
  • A paper store sells wrapping paper rolls and bags. In the spring, they order a ratio of 3:7 in wrapping paper bags in the spring
    9·1 answer
  • Help me please i need it
    8·1 answer
  • Where is the line of symmetry of this parabola? Write its equation.
    5·1 answer
  • Find the fourth term in the expanded form of (5x + 1)4.
    10·1 answer
  • Justify whether the solution makes sense.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!