1 year ago

PLEASE HURRY

Mathematics

1 answer:

Ksenya-84 [330]1 year ago

8 0

Answer:

Step-by-step explanation:

4 is the intersecting point which states p intersect q giving both tennis and basketball players

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An altimeter records the height of a stunt man as he jumps from an airplane at

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the stunning men has be fly for a 1 min

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2 years ago

raphael went to the store and bought 2.88 pounds of chicken for $7.00 what was the cost per pound of chicken round to the neares

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2.43

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3 years ago

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3 years ago

An SRS of 450 450 high school seniors gained an average of ¯ x = 20 x¯=20 points in their second attempt at the SAT Mathematics

maria [59]

Answer: (15.47, 24.53)

Step-by-step explanation:

We know that the confidence interval for population mean is given by :_

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

, where n= sample size.

$\sigma$ = standard deviation.

$\overline{x}$ = sample mean.

z*= Critical value.

Given : n= 450

$\overline{x}=20$

$\sigma=49$

Critical value for 95% confidence = z*=1.96 [From z-value table]

Then, the 95% confidence interval will be :-

$20\pm (1.96)\dfrac{49}{\sqrt{450}}$

$\approx 20\pm (1.96)(2.31)$

$\approx 20\pm 4.53$

$=(20-4.53,\ 20+4.53)=(15.47,\ 24.53)$

Hence, the 95% confidence interval for the mean change in score μ μ in the population of all high school seniors. : (15.47, 24.53)

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3 years ago

Answer the following questions: 2/3 is what percent of 1/4?

Zolol [24]

Answer:

1/2 or 0.5

Step-by-step explanation:

To find out what 2/3 is out of 3/4, we just have to multiply them together to get our exact answer.

$\frac{2}{3} *\frac{3}{4}=\frac{6}{12}=\frac{1}{2}$

Our final answer is 1/2 or 0.5.

7 0

3 years ago

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