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gregori [183]
3 years ago
10

A number written in the form of p by Q is called​

Mathematics
1 answer:
Vsevolod [243]3 years ago
6 0

Answer:

Rational number

Step-by-step explanation:

If a number is expressed in the form of p/q then it is a rational number. Here p and q are integers, and q is not equal to 0. A rational number should have a numerator and denominator.

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Answer:

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The claim is that the batteries power the laptops for significantly less than 4 hours.

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As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=2.

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This test is a left-tailed test, with 499 degrees of freedom and t=-5.5902, so the P-value for this test is calculated as (using a t-table):

P-value=P(t

As the P-value (0) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that the batteries power the laptops for significantly less than 4 hours.

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