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taurus [48]
2 years ago
7

There Are TWO answers to this . I will reward brainliest

Mathematics
1 answer:
AVprozaik [17]2 years ago
5 0
The answer should be the first option and the third. A convenience sample is very similar to a biased sample. 
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A set of middle school student heights are normally distributed with a mean of 150 centimeters and a standard deviation of 20 ce
julsineya [31]

Answer:

The proportion of students whose height are lower than Darnell's height is 71.57%

Step-by-step explanation:

The complete question is:

A set of middle school student heights are normally distributed with a mean of 150 centimeters and a standard deviation of 20 centimeters. Darnel is a middle school student with a height of 161.4cm.

What proportion of proportion of students height are lower than Darnell's height.

Answer:

We first calculate the z-score corresponding to Darnell's height using:

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

We substitute x=161.4 , \mu=150, and \sigma=20 to get:

Z=\frac{161.4-150}{20} \\Z=0.57

From the normal distribution table, we read 0.5 under 7.

The corresponding area is 0.7157

Therefore the proportion of students whose height are lower than Darnell's height is 71.57%

8 0
2 years ago
Can someone please help me
irina [24]

Answer:d

Step-by-step explanation:

4 0
2 years ago
How many strings of eight uppercase English letters are there if no letter can be repeated?
zepelin [54]
....................................3.....................................
7 0
3 years ago
Multiply<br> 7. (-5)<br> anotha one <br> -dj khalid
Valentin [98]

Answer:

-35

Step-by-step explanation:

brainliest pleaseee

3 0
3 years ago
Read 2 more answers
bill gets $0.05 for each can $0.20 for each glass bottle he returns to the recycling center yesterday he returned 32 cans and 10
solmaris [256]
32 x 0.05 ( because there are are 32 cans that are worth 5 cents each ) = 160 cents ($1.60)

Then:

10 x 0.20 ( 10 bottles that are worth 20 cents each ) = $2

Then plus them together

Answer = $3.60
7 0
3 years ago
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