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yawa3891 [41]
2 years ago
11

The grade point average in an econometrics examination was normally distributed with a mean of 75. in a sample of 10 percent of

students it was found that the grade point average was greater than 80. can you tell what the standard deviation of the grade point average was?
Mathematics
1 answer:
podryga [215]2 years ago
8 0
<span>No. From the data provided you can not determine what the standard deviation is. In order to determine the standard deviation you need the actual grades not just a mean.</span>
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The distance covered by the hiker if he traveled a horizontal distance of 120 ft at and angle of 6° will be given by:
cos θ=adjacent/hypotenuse
let the hypotenuse be h, adjacent =120 ft, θ=6°, thus plugging in the values we shall have:
cos 6=120/h
h=120/cos 6
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Answer: 120.661 ft
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Mr. Jones waffle recipe uses 3/4 cups of milk to make 8 waffles how many cups of milk should be used to make 24 waffles?
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Answer:

9/4

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Mr. Peter charges $2.25 for the usage of laptop for 9 hours. How much Victor needs to pay for 15 hours of usage?
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Jordan is making gifts for volunteers and orders 4,580 personalized M&amp;Ms. She puts 34 M&amp;Ms in each gift. How many gifts
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134

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to find how many gifts it can make, you must find how many times 34 can go into 4580. do this by deciding 4580 by 34.

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8 0
2 years ago
Tom went on a bike to the store 3 miles away. If it took Tom 1/2 of an hour to get there and 2/3 of an hour to get back , what w
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v = 6 / (7/6)

v = 36 / 7 = 5.14 mi/h

Tom's average speed was 5.14 mi/h.

8 0
2 years ago
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