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2 years ago

.) What is the unit rate in miles per gallon? =

Mathematics

2 answers:

Oxana [17]2 years ago

7 0

There is no unit you just need to work it out by dividing the miles travelled by the amount of gallons it took to refill.

Ira Lisetskai [31]2 years ago

5 0

Answer:

25 miles per gallon 10 gallons is the UNIT RATE.

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The administrator of a nursing home would like to do a time-and-motion study of staff time spend per day performing nonemergency

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32 days must be sampled to test the proposed hypothesis.

Step-by-step explanation:

Consider the provided information.

The average number of person-hours per day spent on these task was $\mu_0=16$ .

The actual value of μ is 12 hours or less i.e μ=12

She wants a test having α=0.05

The probability of a type II error of at most β=0.10 and σ=7.64.

δ = μ-μ0

= 12-16

= -4

Now use the formula for calculating the sample size:

$N=\frac{(Z_{\alpha}+Z_{\beta})^2\sigma^2}{\delta^2}$

Substitute the respective values.

$N=\frac{(Z_{0.05}+Z_{0.1})^2(7.64)^2}{(-4)^2}$

$N=\frac{(1.6449+1.2816)^2(7.64)^2}{16}$

$N=31.2437958482\approx 32$

Hence, 32 days must be sampled to test the proposed hypothesis.

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