2 years ago

What is the relationship between Ingles 9 and 17

Mathematics

1 answer:

zubka84 [21]2 years ago

8 0

Answer:

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Salaries of 49 college graduates who took a statistics course in college have a mean, x overbar, of $ 65 comma 300. Assuming a

Molodets [167]

Answer: $60,540< \mu$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}-z^*\dfrac{\sigma}{\sqrt{n}}< \mu$

, where $\sigma$ = Population standard deviation.

n= sample size

$\overline{x}$ = Sample mean

z* = Critical z-value .

Given : $\sigma=\$17,000$

n= 49

$\overline{x}= \$65,300$

Two-tailed critical value for 95% confidence interval = $z^*=1.960$

Then, the 95% confidence interval would be :-

$65,300-(1.96)\dfrac{17000}{\sqrt{49}}< \mu$

$=65,300-(1.96)\dfrac{17000}{7}< \mu$

$=65,300-4760< \mu$

$=60,540< \mu$

Hence, the 95% confidence interval for estimating the population mean $(\mu)$ :

$60,540< \mu$

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3 years ago

chuck earned $76 mowing lawns.the gas for the mower cost $12 and he bought a new string for the trimmer for $7.write and find th

Harlamova29_29 [7]

76 - 12 = 64 - 7 = 57

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3 years ago

X / 7 = 3 A. 21 B. 3/7 C. 20 D. -21

Alexus [3.1K]

The answer would be A. 21 because 21/7 would equal 3

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3 years ago

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2x − 5 > 3 or −4x + 7 < −25 you have to plot it on a number line

NNADVOKAT [17]

Answer:

Step-by-step explanation:

2x - 5 > 3 or -4x + 7 < -25

2x < 8. or -4x < -32

x < 4. or. x > 8

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Solve the folliwing equations. 9+4x=-15

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Answer:

$9 + 4x = - 5 \\ 4x = - 5 - 9 \\ 4x = - 14 \\ x = \frac{ - 14}{4} \\ x = \frac{7}{4} \\ x = 1.75$

Step-by-step explanation:

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3 years ago