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Dafna1 [17]
3 years ago
8

HELP WITH ALL PLSSSSSSSSS

Mathematics
2 answers:
igor_vitrenko [27]3 years ago
6 0

Step-by-step explanation:

hold on I'm. going to help you with this

svlad2 [7]3 years ago
5 0
I need answers I csnt help you my brotha, would appreciate if you could give me a thumbs up
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A study of one thousand teens found that the number of hours they spend on social networking sites each week is normally distrib
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Given:

Sample Mean <span>= 30<span>
Sample size </span><span><span><span>= 1000</span></span><span>
</span></span></span>Population Standard deviation or <span><span><span>σ<span>=2</span></span><span>
</span></span>Confidence interval </span><span>= 95%</span>

to compute for the confidence interval

Population Mean or <span>μ<span><span>= sample mean ± (</span>z×<span>SE</span>)</span></span>

<span><span>where:</span></span>

<span><span>SE</span>→</span> Standard Error

<span><span>SE</span>=<span>σ<span>√n</span>= 30</span></span>√1000=0.9486

Critical Value of z for 95% confidence interval <span>=1.96</span>

<span>μ<span>=30±<span>(1.96×0.9486)</span></span><span>
</span></span><span>μ<span>=30±1.8594</span></span>

Upper Limit

<span>μ <span>= 30 + 1.8594 = 31.8594</span></span>

Lower Limit

<span>μ <span>= 30 − 1.8594 = <span>28.1406</span></span></span>

<span><span><span>
</span></span></span>

<span><span><span>answer: 28.1406<u<31.8594</span></span></span>

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What is f(5) for the function f(x) = 7x + 1
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7 (5) + 1 = 35 + 1 = 36

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