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ki77a [65]
3 years ago
13

What is the probability that five randomly selected students will have a mean score that is greater than the mean achieved by th

e students in the previous problem? (Round your answer to 4 decimal places.
Mathematics
1 answer:
katrin2010 [14]3 years ago
5 0

Answer:

the probability that five randomly selected students will have a mean score that is greater than the mean achieved by the students = 0.0096

Step-by-step explanation:

From the five randomly selected students ; 160, 175, 163, 149, 153

mean average of the students = 160+175+163+149+153/5

= mean = x-bar = 800/5

mean x-bar = 160

from probability distribution, P(x-bar > 160) = P[ x-bar - miu / SD > 160 -150.8 /3.94]

P( Z>2.34) = from normal Z-distribution table

= 0.0096419

= 0.0096

hence the probability that five randomly selected students will have a mean score that is greater than the mean achieved by the students = 0.0096

where SD = standard deviation = 3.94 and Miu = 150.8

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product is multiplication so find the square root of 182

sqrt(182) = 13.49

 so use the whole number above and below that

13 * 14 = 182

 the page numbers are 13 & 14

6 0
3 years ago
Solve 7b 3 - 4b = 3 - 3 (b 4)
frez [133]
7b + 3 - 4b = 3 - 3(b + 4)
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3 years ago
Al tom and Joe share €3000. The ratio of the amount Al gets to the amount tom gets is in the ratio 5:4. Joe gets 1.5 times the a
suter [353]

Answer:

€1333.33

Step-by-step explanation:

Al Tom ratio to Joe=5:4

Joe gets 1.5 times the amount Al gets

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Joe share

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3 years ago
In order to make a specific shade of green paint, a painter mixes 1 1/2 quarts of blue paint, 2 cups of green paint, and 1/2 gal
ella [17]

Answer:

Step-by-step explanation:

In order to make a specific shade of green paint, a painter mixes 1 1/2 quarts of blue paint. Converting 1.5 quarts to cup,

1 quart = 4 cups

1.5 quarts = 1.5 × 4 = 6 cups

She also used 1/2 gallon of white paint. Converting 0.5 gallons to cup,

0.0625 gallons = 1 cup

0.5 gallons = 0.5/0.0625 = 8 cups

This means that the ratio of cups of blue paint to green paint to white paint is 6: 2 :8

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To make 100 cups of this shade of green,

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7 0
2 years ago
P= 14413.49<br> R= 0.0015<br> T= 36<br><br> What is I= Prt
tamaranim1 [39]

Answer: I = 778. 33

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P= 14413.49

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The formula for calculating interest is given as :

I = PRT

substituting the given values , we have :

I = 14413.49 x 0.0015 x 36

I = 778.32846

I = 778. 33

6 0
3 years ago
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