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____ [38]
3 years ago
15

Here are the iq test scores of 31 seventh-grade girls in a midwest school district: 114 100 104 89 102 91 114 114 103 105 108 13

0 120 132 111 128 118 119 86 72 111 103 74 112 107 103 98 96 112 112 93 these 31 girls are an srs of all seventh-grade girls in the school district. suppose that the standard deviation of iq scores in this population is known to be σ = 15. we expect the distribution of iq scores to be close to normal. estimate the mean iq score for all seventh-grade girls in the school district, using a 99% confidence interval.
Mathematics
1 answer:
Darya [45]3 years ago
6 0
Not really sure what the question is
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Sophia exchanged 1,000 US dollars for the south African currency. the exchange rate was 7.15 rand to $1.00.
mel-nik [20]
1 / 7.15 = 1000 / x......$ 1 to 7.15 rand = $ 1000 to x rand
cross multiply because this is a proportion
(1)(x) = (7.15)(1000)
x = 7150 <=== Sophia got 7150 rand
5 0
2 years ago
There is 3 4 of an apple pie left from dinner. Tomorrow, Victor plans to eat 1 4 of the pie that was left. Enter how much of the
lora16 [44]

Answer:

3/16

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Let the size of the whole apple be T

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2 years ago
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Anna [14]

Answer:

2

Step-by-step explanation:

3 0
2 years ago
A student wrote the following on his math homework assignment:
ch4aika [34]
Instead of using PEMDAS or the Order of Operations, the student went ahead and solved the equation as though it were written 6 * 12 - 8.

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2 years ago
The next model of a sports car will cost 5.8% more than the current model the current model cost 31,000 how much will the price
iren2701 [21]

Answer:

1798 and 32798

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8 0
3 years ago
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