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3 years ago

Slope and equation, how much battery does she lose an hour

Mathematics

2 answers:

insens350 [35]3 years ago

8 0

Equation: y=-5x+100, where x is the number of hours and y is the battery percentage
The slope is -5, meaning she loses 5% of battery per hour
:)

zmey [24]3 years ago

3 0

She loses 5% a hour djdjdjdjdj

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The upper limit on the confidence interval is -$299.13.

Step-by-step explanation:

The sample data is:

Gender Mean Std. dev. n

Female 2577.75 1916.29 67

Male 3809.42 2379.47 33

We have to calculate a 95% confidence interval for the difference between means, with a T-model.

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The sample 2, of size n2=33 has a mean of 3809.42 and a standard deviation of 2379.47.

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The estimated standard error of the difference between means is computed using the formula:

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The t-value for a 95% confidence interval is t=1.96.

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$MOE=t\cdot s_M=1.96 \cdot 475.795=932.54$

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The 95% confidence interval for the difference between means is (-2164.21, -299.13).

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