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Umnica [9.8K]
3 years ago
9

Does anyone know how to do this!!!!

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
8 0
I cannot see it good
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Recall the chapter example which described the fact that the mean IQ in large, diverse populations is 100 and the standard devia
vova2212 [387]

Answer:

The margin of error for the 99% confidence level for this sample is ±2.23.

None of the given figures is close to the answer:

E. None of the above

Step-by-step explanation:

margin of error (ME) around the mean can be calculated using the formula

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic of the 99% confidence level (2.576)
  • s is the population IQ standard deviation (15)
  • N is the sample size (300)

Using these numbers we get:

ME=\frac{2.576*15}{\sqrt{300} }  ≈ 2.23

7 0
2 years ago
When you have the number 81 as your median and you have to find the missing number out of the following 82,87,77,70,80,88
Natali5045456 [20]
Uh, so, you're median is 81 already.

Since the middle two numbers are 82 and 80, you have to add them together and then divide by 2. 

However, if you're trying to add a number in, adding 81 as it is would work as well.

Hope this helps!
6 0
3 years ago
What is 2/3 -1/5 (fractions)
butalik [34]

Answer:

7/15

Step-by-step explanation:

8 0
3 years ago
Three students scheduled interviews for summer employment at the Brookwood Institute. In each case the interview results in eith
adoni [48]

Answer:

a. 8 outcomes

b. Discrete Variable

c. See explanation below

Step-by-step explanation:

a.

Let N = No Offers made

Let Y = Offers made

The Expected outcome are as follows:

NNN, NNY, NYN, YNN, NYY, YNY, YYN, YYY

= 8

b.

Let x = number of offers made

X is said to be discrete if x can take values that are restricted to a defined or limited values

X is said to be continuous if x can take a range of values that is not restricted to any range(i.e. continuous)

Looking at the brief description above, we can conclude that x is discrete

c.

NNN, 0

NNY, 1

NYN, 1

YNN, 1

NYY, 2

YNY, 2

YYN, 2

YYY, 3

Where 0 to 3 represents number of offers at every instance

5 0
3 years ago
in a survey if 27.5 percent of those questioned chose swimming as their favorite. If 11 people chose swimming then how many peop
arlik [135]
27.5% of x=11     x is the number of people  27.5%=.275     x=11/.275=40 people in the survey participated 
3 0
3 years ago
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