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mina [271]
2 years ago
6

Which of the following describes a scenario in which a chi-square goodness-of-fit test would be an appropriate procedure to just

ify the claim?
A statistician would like to show that one geographical location has a higher proportion of dogs that shed than another geographical location has. The statistician has two independent random samples of dogs from two different geographical locations and has recorded the proportion of dogs that shed in each sample.

A statistician would like to show that one geographical location has a higher proportion of dogs that shed than another geographical location has. The statistician has two independent random samples of dogs from two different geographical locations and has recorded the proportion of dogs that shed in each sample.
A

A principal would like to investigate whether more than 50% of the students in a local high school eat in the school cafeteria. The principal has a random sample of individuals within the school and records the proportion of the students who eat lunch in the school cafeteria.

A principal would like to investigate whether more than 50% of the students in a local high school eat in the school cafeteria. The principal has a random sample of individuals within the school and records the proportion of the students who eat lunch in the school cafeteria.
B

A campaign manager would like to show that the distribution of individuals within several social economic categories is different than what a newspaper reported. The campaign manager has a random sample of potential voters in a large city and records the number of individuals within each of the categories.

A campaign manager would like to show that the distribution of individuals within several social economic categories is different than what a newspaper reported. The campaign manager has a random sample of potential voters in a large city and records the number of individuals within each of the categories.
C

A manager of a water treatment plant would like to investigate whether there is a relationship between the amount of chemical used and the number of bacteria present in the water treated at the plant. The manager measures the level of bacteria from tanks at the facility that each received a different level of chemical treatment.

A manager of a water treatment plant would like to investigate whether there is a relationship between the amount of chemical used and the number of bacteria present in the water treated at the plant. The manager measures the level of bacteria from tanks at the facility that each received a different level of chemical treatment.
D

City officials would like to estimate the average price of gas in their city. The officials have a random sample of gas prices at several gas stations within their city limits.
Mathematics
1 answer:
egoroff_w [7]2 years ago
3 0

Answer:

A campaign manager would like to show the distribution of individuals...

Step-by-step explanation:

goodness of fit can be used to compare observed and expected counts. The newspaper report would be the expected. The campaign manager's distribution is the expected.

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Divide.<br>(2x²+17x+28)÷(x+6)<br>​
oksian1 [2.3K]

Answer:

2x2+17x+28/x+6

Step-by-step explanation:

6 0
3 years ago
Dane says that the answer to the problem 4 to the 6th power times 4 to the 3th power is 16 to the 9th power. What was his mistak
lesya [120]

Step-by-step explanation:

his mistake was that he didnt follow the rules of the order of operations and he multiplied 4 by 4 and just added the third power and the 6th power getting the wrong answer

                        hope this helps:) good luck

8 0
3 years ago
Which is true about the polynomial -8m3 11m?O It is a binomial with a degree of 2.O It is a binomial with a degree of 3.O It is
koban [17]
-8m^3 + 11m....notice that it has 2 terms....(-8m^3) and (11m). Having 2 terms makes it a binomial...if it would have had 3 terms, it would have been a trinomial. If it has only one variable, the degree is the highest exponent...so this has a degree of 3 since ^3 is the highest exponent.
so ur answer is : binomial with a degree of 3
3 0
3 years ago
Read 2 more answers
Alex the electrician needs 34 yards of electrical wire to complete his job. He has a coil of wiring in his workshop. The coiled
bogdanovich [222]

Answer: This coil will not be enough to complete the job.

Step-by-step explanation:

The circumference of the coil of wiring can be calculated with:

C=2\pi r

Where r is the radius and \pi=3.14

The radius can be calculated by dividing the diameter by 2. Then:

r=\frac{18in}{2}\\\\r=9in

Convert 9 inches to yards (1 yard=36 inches):

(9in)(\frac{1yd}{36in})=0.25yd

Substitute this radius into the formula:

C=2(3.14)(0.25yd)\\C=1.57yd

Since there are 21 circles of wire, you need to multiply C=1.57yd by 21:

C_T=(1.57yd)(21)=32.97yd

The coil has 32.97 yards of wire and Alex needs 34 yards, therefore, this coil will not be enough  to complete the job.

8 0
3 years ago
The sum of four times a number and five times another number is -28. The sum of nine times the first number and two times the se
Rina8888 [55]

Answer:

<h2>3 and -8</h2>

Step-by-step explanation:

x,\ y-the\ numbers\\\\\text{The sum of four times a number and five times another number is -28:}\\\\4x+5y=-28\\\\\text{The sum of nine times the first number and two times the second number is 11:}\\\\9x+2y=11\\\\\text{We have the system of equations:}\\\\\left\{\begin{array}{ccc}4x+5y=-28&\text{multiply both sides by2}\\9x+2y=11&\text{multiply both sides by (-5)}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}8x+10y=-56\\-45x-10y=-55\end{array}\right}\qquad\text{add both sides of the equation}

.\qquad-37x=-111\qquad\text{divide both sides by (-37)}\\.\qquad\qquad\boxed{x=3}\\\\\text{Put the value of x to the first equation:}\\\\4(3)+5y=-28\\12+5y=-28\qquad\text{subtrac 12 from both sides}\\5y=-40\qquad\text{divide both sides by 5}\\\boxed{y=-8}

3 0
3 years ago
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