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hodyreva [135]
2 years ago
15

7) If 14 out of 24 students in a college class are men, then what percent of the class

Mathematics
2 answers:
sergeinik [125]2 years ago
6 0

Answer:

58%

Step-by-step explanation:

14/24 x 100=58.3333333

katrin [286]2 years ago
3 0

Answer:

it's 58.33 but if we're rounding it's 58.

step by step equation:

we turn 14:24 into the fraction 14/24. then we cross multiply to get the answer.

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3 years ago
1. The national mean (μ) IQ score from an IQ test is 100 with a standard deviation (s) of 15. The dean of a college wants to kno
Nat2105 [25]

Answer:

We conclude that the mean IQ of her students is different from the national average.

Step-by-step explanation:

We are given that the national mean (μ) IQ score from an IQ test is 100 with a standard deviation (s) of 15.

The dean of a college want to test whether the mean IQ of her students is different from the national average. For this, she administers IQ tests to her 144 students and calculates a mean score of 113

Let, Null Hypothesis, H_0 : \mu = 100 {means that the mean IQ of her students is same as of national average}

Alternate Hypothesis, H_1 : \mu\neq 100  {means that the mean IQ of her students is different from the national average}

(a) The test statistics that will be used here is One sample z-test statistics;

               T.S. = \frac{Xbar-\mu}{\frac{s}{\sqrt{n} } } ~ N(0,1)

where, Xbar = sample mean score = 113

              s = population standard deviation = 15

             n = sample of students = 144

So, test statistics = \frac{113-100}{\frac{15}{\sqrt{144} } }

                             = 10.4

Now, at 0.05 significance level, the z table gives critical value of 1.96. Since our test statistics is more than the critical value of z which means our test statistics will fall in the rejection region and we have sufficient evidence to reject our null hypothesis.

Therefore, we conclude that the mean IQ of her students is different from the national average.

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3 years ago
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10.5 -- 3/2=1.5 -- 7x1.5=10.5
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3 years ago
Can somebody tell me what is 3x - 4 = 5?
lions [1.4K]

Answer:

x=3

Step-by-step explanation:

Move the -4 over to the other side.

3x=9

Divide both sides by 3.

x=3

4 0
3 years ago
Read 2 more answers
Which of the following statements describes the process for solving 4x ≥ -24?
dezoksy [38]
Divide both sides of the inequality by 4 but don’t flip the symbol.

You only flip the inequality symbol if you divide by a negative number.

If you’re solving for x (which you are), you want to get x by itself. The only way to do that is to divide by 4.
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