MATHEMATICS HIGH SCHOOL

A researcher collated data on Americans’ leisure time activities. She found the mean number of hours spent watching television each weekday to be 2.7 hours with a standard deviation of 0.4 hours. Jonathan believes that his football team buddies watch less television than the average American. He gathered data from 15 football teammates and found the mean to be 2.3. Which of the following shows the correct z-statistic for this situation?

Answers

Answer 1

Answer:

Answer:

Z Test = -3.87298

p= .0001

Then the results are significant at p values < 0.1

Step-by-step explanation:

To answer this question we have to consider some things.

1) The Mean of Population is given by this formula:

$\mu =(\sum X_(i))/(N)\; \mu=2.8$

The Population Standard Deviation is given by this formula:

$\sigma =\frac{\sqrt{(x_(i)-\mu)^(2)}}{N}\: \sigma=0.4$

On the other hand, the Team buddies are a sample of this population, whose mean is:

$\bar{x} = (\sum x_(i) )/(n)=2.3$

The Sample Standard Deviation is given by this formula:

$\S =\frac{\sqrt{(x_(i)-\mu)^(2)}}{N-1}\: \s=$

The Z test shows us the validity of the results.

For the Z test we need the Variance $\sigma ^(2)$

Z = (M - μ) / √(σ2 / n)

$Z_(score)=\frac{2.3-2.7}{\sqrt{(0.16)/(0.15)}}\nZ_(score)= -3.87298$

Z Test = -3.87298 standard deviation units, since it's a negative value is 3.897 below the mean.

p= .0001 the p value.

Then the results are significant at p values < 0.1

Answer 2

Answer:

Answer:

-3.87...just took the test and got this question right

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Answers

1. Your client has an extensive home computer system. He wants it in his living room because he wants to be with his family while he works. You develop a decorating plan that
D. incorporates the computer and the family activities.

You live in an area of predominantly wealthy people. As a decorator, you would like to attract these people as clients. On a first interview with one of these clients, how should you dress?
C. Very formally to show the client you care

What is one similarity between interior decorators and interior designers?
C. Both prepare working drawings for interior construction.

Decorators working in new-home construction help clients select
A. siding.

_______ emphasize the most important part of your products or service.
D. Styles

Marco Polo discovered the _______ influence on his travels.
B. Renaissance

Which one of the following client types wants to be the first to have something new?
C. Innovator

Decorators working in new-home construction help clients select:

see page 25 - window treatments is the answer

_______ emphasize the most important part of your products or service.

see page 45 - Features is the answer

The lcd for the fractions 1/3, 3/4, 5/32, and 8/9 is

Answers

The answer is the two highest denominators multiplied together (32*9 = 288). This is obviously a common denominator for 32 and 9, but it can also be divided by 3 and 4. Because there are no other common denominators before that, the LCD must be 288.

Eduardo rented a bike from James' Bikes. It cost $19 plus $6 per hour. If Eduardo paid $49 then he rented the bike for how many hours?

Answers

So to solve this, you would have to write the equation, which is 49=6x+19

Then solve your equation.

49=6x+19
-19 -19
30=6x
/6 /6

5=x

So he rented it for 5 hours.

Final answer:

As per the given values, Eduardo rented the bike for 5 hours.

Explanation:

Fixed cost = $19

Total amount paid = $49

Cost of each hour = $6,

Finding the number of hours Eduardo rented the bike for -

= Total amount paid - fixed cost

= 49 - 19

= 30

This remaining amount represents the cost of the hours rented.

Calculating the number of hours -

= Total number of hours / Cost of each hour

= 30/6

= 5

So, Eduardo rented the bike for 5 hours.

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The length of the sides of a square are s inches long. A rectangle is six inches shorter and eight inches wider than the square. Express both the length and the width of the rectangle as a function of a side of the square. a) Rectangle width is s + 8 and length is s - 6 b) Rectangle width is s - 8 and length is s + 6

Answers

Answer:

HI,

Answer A

Step-by-step explanation:

Final answer:

The rectangle has a length s - 6 and width s + 8 in terms of the side length s of the square.

Explanation:

The length of the sides of a square is s inches. The rectangle is six inches shorter and eight inches wider than the square. To express the length and width of the rectangle as a function of the side of the square:

Length of the rectangle = Length of the square - 6 = s - 6

Width of the rectangle = Width of the square + 8 = s + 8

Therefore, the correct expression for the length and width of the rectangle is: a) Rectangle width is s + 8 and length is s - 6

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What is the volume enclosed by the slanted prism in the diagram 12 cm 9 cm area of base = 25 cm

Answers

V=Bh V = volume B = area of the base h = height* *The height is the perpendicular height, 9 cm in this case, not the slant length, 12 cm.

so its 225cm

hope it helped

Examples of rational numbers

Answers

Examples of rational numbers :
1, 1/2, 3/4 , 5 , 6, 15/8 etc

Rational numbers are numbers which can be written as fraction as also that the numerator and denominator are whole examples.
Example 5 can be written as fraction in the form of 5/1.

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