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diamong [38]
3 years ago
15

A local convenience store in a large city closes each day at 10 P.M. The owner of the store is investigating whether mean sales

will increase by at least $10 per day if the store remains open until 11 P.M. The owner asked the 41 members of a local civic group to estimate the amount of money they might spend during the extra hour. The sample mean was $11.50. The owner will conduct a one-sample tt-test for a population mean.
Have the conditions for inference been met?

A. Yes, all conditions have been met.
B. No, the sample was not chosen using a random method.
C. No, the sample size is greater than 10 percent of the population.
D. No, the sample size is not large enough to assume normality of the sampling distribution.
E. No, the distribution of the sample is not normal.
Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
7 0

Answer:

the answer is B

Step-by-step explanation:

cuz i have already take the test

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The table of ordered pairs gives an exponential function.<br> Write an equation for the function.
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Answer:the function would be y=m+b

Step-by-step explanation:

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The height of a parallelogram is one-third its base. If the area of the parallelogram is 363 square inches, find its base and he
kipiarov [429]

Answer:

Height = 11 inches

Base = 33 inches

Step-by-step explanation:

In this question, we are asked to find the height and base of a parallelogram given the area of the parallelogram.

From the question, we are told that height is 1/3 of base. This means that base is 3 times the height

So if we represent the height with variable h, then the base is 3h

Mathematically the area of a parallelogram can be calculated by the formula

A = bh

Thus ,

363 = h * 3h

3h^2 = 363

divide through by 3

h^2 = 121

h = √121

h = 11 inches

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8 0
3 years ago
Mia wants to buy 3 notebooks for $1.29 each. What is the expression for the total cost?
ololo11 [35]

Step-by-step explanation:

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then total cost =3×1.29

hence, 3×29

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8 0
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How would I figure out a linear equation with two plot points with fractions? (1/3(6),3) and (1/2(19),-2) are my two plot points
murzikaleks [220]

Answer: m=\frac{-30}{79},\ y=5.40

Step-by-step explanation:

Given

Points are \left(6\frac{1}{3},3\right),\ \left(19\frac{1}{2},-2\right)

Convert mixed numeral to fraction

\left(6\frac{1}{3},3\right)\Rightarrow \left(\dfrac{19}{3},3\right)\\\\\left(19\frac{1}{2},-2\right)\Rightarrow \left(\dfrac{39}{2},-2\right)

Slope of the line is

\Rightarrow m=\dfrac{3-(-2)}{\dfrac{19}{3}-\dfrac{39}{2}}\\\\\Rightarrow m=\dfrac{5}{\dfrac{38-117}{6}}\\\\\Rightarrow m=\dfrac{-30}{79}

Equation of line

\Rightarrow \dfrac{y-3}{x-\dfrac{19}{3}}=\dfrac{-30}{79}\\\\\text{for y-intercept, put x=0}\\\\\Rightarrow \dfrac{y-3}{0-\dfrac{19}{3}}=\dfrac{-30}{79}\\\\\Rightarrow y-3=\dfrac{190}{79}\\\\\Rightarrow y=3+2.40\\\Rightarrow y=5.40

3 0
3 years ago
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