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____ [38]
3 years ago
5

Weights of women in one age group are normally distributed with a standard deviation σ of 18 lb. A researcher wishes to estimate

the mean weight of all women in this age group. Find how large a sample must be drawn in order to be 90 percent confident that the sample mean will not differ from the population mean by more than 2.0 lb.
Mathematics
1 answer:
sergeinik [125]3 years ago
6 0
Could you be clearer
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PLEASE SOMEONE DO THIS IM RUSHING SO BAD AND IM CRYING - GIVING BRAINLIEST!!!!!
LUCKY_DIMON [66]

Answer:

1.) $1.07

2.) $2.25

3.) $14.20

Step-by-step explanation:

1.) Toonie = 2 CAD

CAD = USD $1.57

$1.57 - $0.50 = $1.07 (USD)

2.) $2.75 - $5 = $2.25 (USD)

3.) $20 x 4 = 80

$80 - $65.80 = $14.20 (USD)

Hope this helped!

8 0
3 years ago
What does "how many times greater" mean in math?
USPshnik [31]

Answer: multply

Step-by-step explanation:

3 0
3 years ago
Please help me with this problem please
11111nata11111 [884]

9514 1404 393

Answer:

  • shortest: 11 1/8 in
  • longest: 11 3/8 in

Step-by-step explanation:

It should be no surprise that the shortest allowable length is the nominal length less the full allowed tolerance:

  11 1/4 - 1/8 = 11 1/8 . . . inches

__

Likewise, the longest allowable length is the nominal length plus the maximum tolerance:

  11 1/4 + 1/8 = 11 3/8 . . . inches

_____

Of course, you know that 1/4 = 2/8, so adding or subtracting 1/8 gives the fractions shown above.

5 0
3 years ago
Number 8 Please!!!!!<br> Thank You!!!
lbvjy [14]

Answer:

x = 2 + 5i√2 / 6 and x = 2 - 5i√2 / 6

Step-by-step explanation:

If this isn't right, I'm sorry. Also, you can put x = 2 ± 5i√2 /6 to make it shorter and not have two answers. Hope this helps :)

4 0
3 years ago
What is 2/3÷-3/5 as an improper fraction
rodikova [14]

Answer: -10/9

Step-by-step explanation: is this what you were looking for

8 0
3 years ago
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