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2 years ago

The number of pages that Zev, Kelly, Marneisha, and Aleisha can read in a day is shown below.

Mathematics

2 answers:

aliina [53]2 years ago

6 0

Answer:

its C i already did the test

Step-by-step explanation:

Alex_Xolod [135]2 years ago

4 0

Answer:

C ; Marneisha

Step-by-step explanation:

68 * .14 = 9.52 which is higher than the rest

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Every day, Bert spends an hour commuting to and from his office, driving at an average speed of 50 mph and taking the same route

Ira Lisetskai [31]

About 45 miles and if you have options choose the closest to45 miles

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2 years ago

SAT scores of students at an Ivy League college are distributed with a standard deviation of 250 points. Two statistics students

Minchanka [31]

Answer:

The sample size should be 273 students

Step-by-step explanation:

Here Raina wants to use 90% interval then

ME = z. SE

SE = s d/√n at end

ME/z = s d/√n

n={z.sd/ME)²

Z = 1.65 =>due to 90%confidence interval

ME= 24

sd=250

putting these value in the question we get 273 students

8 0

2 years ago

Suki is making lemonade to bring to the beach. She has two containers. One holds one gallon and the other holds 7 quarts. If she

Alex73 [517]

Answer:

40 cups

Step-by-step explanation:

7 0

2 years ago

Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2. Use the given sample sizes and numb

dezoksy [38]

Answer:

The calculated value Z = 3.775 > 1.96 at 0.05 level of significance

Null hypothesis is rejected

The Two Population proportion are not equal

Step-by-step explanation:

Given first sample size n₁ = 677

First sample proportion

$p^{-} _{1} = \frac{x_{1} }{n_{1} } = \frac{172}{677} = 0.254$

Given second sample size n₂ = 3377

second sample proportion

$p^{-} _{2} = \frac{x_{2} }{n_{2} } = \frac{654}{3377} = 0.1936$

Null Hypothesis : H₀ : p₁ = p₂.

Alternative Hypothesis : H₁ : p₁ ≠ p₂.

Test statistic

$Z = \frac{p_{1} ^{-}-p^{-} _{2} }{\sqrt{P Q(\frac{1}{n_{1} } +\frac{1}{n_{2} }) } }$

where

$P = \frac{n_{1} p_{1} + n_{2} p_{2} }{n_{1}+n_{2} } = \frac{677 X 0.254+3377 X 0.1936}{677+3377}$

P = 0.2036

Q = 1 - P = 1 - 0.2036 = 0.7964

$Z = \frac{0.254- 0.1936 }{\sqrt{0.2036 X 0.7964(\frac{1}{677 } +\frac{1}{3377 }) } }$

Z = 3.775

Critical value ∝=0.05

Z- value = 1.96

The calculated value Z = 3.775 > 1.96 at 0.05 level of significance

Null hypothesis is rejected

The Two Population proportion are not equal

3 0

2 years ago

If four people share 100 baseball cards and each person must receive a different positive whole number of cards, what is the gre

pentagon [3]

One person recieves 1. Second person receives 2. Third person receives 3. The amount of cards left over is 94. So the fourth person receives the highest amount possible with everyone in positive numbers of cards.

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2 years ago