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Degger [83]
3 years ago
12

John was told that his IQ score was 3 standard deviations above the mean. If IQ scores were approximately normal with μ=93 and σ

=9, what was John's score? Do not include units in your answer. For example, if you found that the score was 93 points, you would enter 93.
Mathematics
1 answer:
Darina [25.2K]3 years ago
4 0

9 is the standard deviation in this problem. The mean iq score is 93.

This meant that his IQ score is 93+9*3=93+27=120 :) also this john person is really smart im jealous :(

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A motorboat travels 432 kilometers on 6 hours going upstream and 384 km in 4 hours going downstream. What is the rate of the boa
antiseptic1488 [7]
Going upstream: 432 km / 6 hours = 72 km/h
Going downstream: 384 km / 4 hours = 96 km/h
Going upstream against the current means that the effective speed is:
r_boat - r_current = 72
Meanwhile, going downstream with the current means;
r_boat + r_current = 96
Adding both equations (to cancel out r_current) gives:
2r_boat = 72 + 96
r_boat = 84 km/h
Substituting back into one of the original equations: r_current = 12 km/h.
6 0
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a rabbit can run 35 miles per hour. a fox run can run 21 miles in half an hour.which animal is faster,and by how much
lord [1]

Answer:

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Step-by-step explanation:

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6 0
4 years ago
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explain how the singular forms of morning, night, monday, and tuesday may be changed to the plural forms every-morning every-nig
Rus_ich [418]

Besides using the word "every" before the singular forms of the words above, they can also be changed to their plural forms by adding "s" behind them. For example "morning" becomes "mornings".

<h3>

Plural form of Morning in a Sentence</h3>

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Other examples related to the words above are:

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See the link below for more about the Plural forms:

brainly.com/question/586494

5 0
2 years ago
!!!!!!!!!!!!!!hellp plzzz
Andreas93 [3]
It is true. YOU'RE WELCOME :D
3 0
3 years ago
The 9’s in 9,905,482
Sergeu [11.5K]

Answer:Your question is very detailed but I’ll try anyways, there are two 9,s in that number and 9 million is one of them and the other is 900,000

Step-by-step explanation:

If this is wrong you can report it to remove I’m sure,

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