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3 years ago

5

All my poins for this algebra.Inga starts with K kitkat bars.She buys 5 more,and then gives half to her best friend.She finally

eats 2 of them herself.she ends up with ________ bars

1 answer:

pogonyaev3 years ago

4 0

Ends up=( K+5)1/2 -2 ends up=K/2+2.5-2=K(.5) + .5

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blsea [12.9K]

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Step-by-step explanation:

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Population mean, μ = 101.5

Sample mean, $\bar{x}$ = 106.4

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 15

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 101.5\\H_A: \mu > 101.5$

We use one-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

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Since,

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We reject the null hypothesis and accept the alternate hypothesis.

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