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2 years ago

Philip took a test and missed 35% of the questions. If he missed 28 questions, how many how questions where on the test

Mathematics

2 answers:

Ghella [55]2 years ago

5 0

Answer:

80 questions

Step-by-step explanation:

35/100 = 28/x
35x = 28(100)
35x = 2800
x = 2800/35
x = 80

Vika [28.1K]2 years ago

5 0

The answer is 38 or 37.8

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A sample of students that had stuffy or runny noses were blindly given a single Skittles candy to put in their mouth. They were

Korvikt [17]

Answer:

The confidence interval is $0.2857< p < 0.4601$

Step-by-step explanation:

From the question we are told that

The sample size is n = 118

The number that gave the correct answer is k = 44

Generally the sample proportion is mathematically represented as

$\^ p = \frac{44}{118}$

=> $\^ p =0.3729$

Generally given that the confidence level is 95% the level of significance is mathematically represented as

$\alpha = (100 -95) \%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \sqrt{\frac{p(1 - p)}{n} }$

=> $E = 1.96 * \sqrt{\frac{0.3729(1 - 0.3729)}{118} }$

=> $E = 0.0872$

Generally 95% confidence interval is mathematically represented as

$\r p -E < p < \r p +E$

=> $0.3729 -0.0872< p < 0.3729 +0.0872$

=> $0.2857< p < 0.4601$

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2 years ago

Jennifer Drive 265 miles in five hours what is her average rate of speed and miles per hour

iris [78.8K]

Answer:

53mph

Step-by-step explanation:

Divide 265 by 5, there is your answer.

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3 years ago

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Arada [10]

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Answer:

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Step-by-step explanation:

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Answer:

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