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Kaylis [27]
3 years ago
5

A random sample of n = 4 scores is obtained from a normal population with m = 30 and s = 8. what is the probability that the sam

ple mean will be smaller than m = 22? 0.00003 0.0228 0.1587 0.3085
Mathematics
1 answer:
11111nata11111 [884]3 years ago
5 0

A repeated-measures study using a sample of n = 20 participants would A set of n = 25 pairs of scores (X and Y values) has a Pearson correlation of r = 0.80. How much of the variance for the Y scores is predicted by the relationship with X?0.64 or 64%
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What is the smallest positive number that can be added to 55 so that the resulting number and 45 have 9 as their greatest common
kolbaska11 [484]

Answer:

The smallest positive number is 8

Step-by-step explanation:

let the smallest positive number = x

45 is a multiple of 9 ⇒ 9 x 5 = 45

the next multiple of 9 after 55 is  63

= 9 x 7

= 63

Thus, x + 55 = 63

x = 63 - 55

x = 8

The greatest common factor of 45 and 63 = 9

Therefore, the smallest positive number is 8

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3 years ago
Whats the defination of area in math
Brilliant_brown [7]
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3 years ago
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Mark and Amber Vinson have $22,000 to invest in two accounts, part at 10% and part at 12%. If they want to earn a return of at l
KengaRu [80]
22,000 x 2= 44,000

120%

So I think it would equal to 345,600,0 

I am not sure

P.S. I am not good at math sorry if it is wrong...

3 0
3 years ago
A water tank holds 648 gallons but is leaking at a rate of 4 gallons per week. A second water tank holds 864 gallons but is leak
Paraphin [41]

Answer:

64 weeks, I hope it helps :)

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3 years ago
Can someone help me solve this question I can't seem to manage it
MAXImum [283]

Answer:

LA=6 WA=4 LB=6 WB=2

Step-by-step explanation:

Its a square so the sides are 6cm. 2:1 ratio means A is 6*4=24 cm while B is 6*2=12cm.

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3 years ago
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