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4 years ago

What is the answer and how would I solve this?

Mathematics

1 answer:

ipn [44]4 years ago

7 0

Answer:

Step-by-step explanation:

The answere is no solution, there are no values of X that makes the inequality true, therefore there is no solution

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Liza went out for pizza with her mom. Their meal cost $32. Sales tax is 5% and they decide to leave 15%

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3 years ago

A small fountain holds 38 gallons of water in 4 equal-sized sections.

NemiM [27]

A 38/4
B 9 2/4
C 9 1/2

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3 years ago

The following table shows the data collected from a random sample of 100 middle school students on the number of hours they play

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84o students would be expected to play outdoor games for at least three hours every week.

The sample showed that 70% students played outdoor games for at least three hours every week. 70% of 1,200 is 840.

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4 years ago

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3 years ago

Read 2 more answers

From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 21.

zzz [600]

Answer: (20.86, 22.52)

Step-by-step explanation:

Formula to find the confidence interval for population mean :-

$\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}$

, where $\overline{x}$ = sample mean.

z*= critical z-value

n= sample size.

$\sigma$ = Population standard deviation.

By considering the given question , we have

$\overline{x}= 21.69$

$\sigma=3.23$

n= 58

Using z-table, the critical z-value for 95% confidence = z* = 1.96

Then, 95% confidence interval for the amount of time spent on administrative issues will be :

$21.69\pm (1.96)\dfrac{3.23}{\sqrt{58}}$

$=21.69\pm (1.96)\dfrac{1.7}{7.61577}$

$=21.69\pm (1.96)(0.223221)$

$\approx21.69\pm0.83$

$=(21.69-0.83,\ 21.69+0.83)=(20.86,\ 22.52)$

Hence, the 95% confidence interval for the amount of time spent on administrative issues = (20.86, 22.52)

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3 years ago