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Sav [38]
2 years ago
9

Carmen types at a rate of 16 words per minute. How many words does she type in 4 minutes?

Mathematics
1 answer:
Lemur [1.5K]2 years ago
3 0

Answer:

64 words

Step-by-step explanation:

multiply 4 by 16.

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12: 144

Step-by-step explanation:

As it fits all requirments.

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alukav5142 [94]
2x^2 - 4 = 68
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7 0
3 years ago
The manager of a local nightclub has recently surveyed a random sample of 280 customers of the club. She would now like to deter
Lunna [17]

Answer:

z = \frac{35.6-35}{\frac{5}{\sqrt{280}}}= 2.007

p_v = P(z>2.007) = 0.0224

Since the p value is lower than the significance level given of 0.05 we have enough evidence to reject the null hypothesis on this case. And the best conclusion for this case is:

We (reject) the null hypothesis. That means that we (found) evidence to support the alternative.

Step-by-step explanation:

We have the following info given:

\bar X = 35.6 represent the sampel mean for the age of customers

\sigma = 5 represent the population standard deviation

n = 280 represent the sample size selected

We want to test if the mean age of her customers is over 35 so then the system of hypothesis for this case are:

Null hypothesis: \mu \leq 35

Alternative hypothesis \mu >35

The statistic for this case is given by:

z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And replacing the data given we got:

z = \frac{35.6-35}{\frac{5}{\sqrt{280}}}= 2.007

We can calculate the p value since we are conducting a right tailed test like this:

p_v = P(z>2.007) = 0.0224

Since the p value is lower than the significance level given of 0.05 we have enough evidence to reject the null hypothesis on this case. And the best conclusion for this case is:

We (reject) the null hypothesis. That means that we (found) evidence to support the alternative.

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3 years ago
Derek reads at rate of 25 words per min. How long would it take him to read a 225 word article if he read at a constant rate wit
Reptile [31]
It would take him 9 minutes.
3 0
3 years ago
Read 2 more answers
How many calories are in a package of peanuts with 15 grams of protein
fredd [130]

Answer:

85.

Step-by-step explanation:

3 0
3 years ago
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