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Jet001 [13]
2 years ago
6

A test has a 50 questions. Two are essay and the remaining are multiple choice and fill in the blank at a 5:1 ratio respectively

. That means: for every 5 multiple choice there will be 1 fill in the blank
Mathematics
2 answers:
o-na [289]2 years ago
8 0

Answer:If the ratio is 5:1 doesn’t mean that it will be in order but there will be 8 fill in the blank and 40 multiple choice

Step-by-step explanation:

Leya [2.2K]2 years ago
6 0
Answer: 2 essay, 40 multiple choice, 8 fill in the blank.

Explanation:

2 essay (given)

50 - 2 = 48

Find how many multiple choice:

48 x 5/6 = 40

Find how many fill in the blank:

48 x 1/6 = 8
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In a study on the time that
krok68 [10]

The 95% confidence interval of the population mean, in years, is (4.3, 5.3). 4 years is not part of the confidence interval, which means that it contradicts the fact that 39% of students get their college degree in four years.

-----------------------------

To solve this question, we need to find the confidence interval for the amount of time it takes the students to get the degree.

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

-----------------------------

The first step to solve this problem is finding how many degrees of freedom,which is the sample size subtracted by 1. So

df = 80 - 1 = 79

-----------------------------

95% confidence interval

Standard level of confidence, we have to find a value of T, which is found looking at the t table, with 79 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 1.9905.

-----------------------------

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 1.9905\frac{2.2}{\sqrt{80}} = 0.5

In which s is the standard deviation of the sample and n is the size of the sample.

-----------------------------

The lower end of the interval is the sample mean subtracted by M. So it is 4.8 - 0.3 = 4.3 years.

The upper end of the interval is the sample mean added to M. So it is 4.8 + 0.3 = 5.3 years.

-----------------------------

The 95% confidence interval of the population mean, in years, is (4.3, 5.3). 4 years is not part of the confidence interval, which means that it contradicts the fact that 39% of students get their college degree in four years.

A similar question is given at brainly.com/question/24278748

6 0
2 years ago
Find the slope of the line passing through the points A(6, –5) and B(–5, –7).
inna [77]

Answer:

-13/1

Step-by-step explanation:

y2 - y1 / x2 - x1 to find slope

6 0
3 years ago
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Using the section of the graph shown, which of these potential roots of the function should you test first? f(x) = 2x3 – 9x2 – 6
bixtya [17]

Answer: x  =  5 /2 , 4 , -2

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Find the sum of the first 7 terms of the following series, to the nearest integer. 150,60,24...
Sonja [21]

A geometric series is the collection of an unlimited number of terms with a fixed ratio between them. The sum of the first seven terms of the series is 249.

<h3>What is geometrical series?</h3>

A geometric series is the collection of an unlimited number of terms with a fixed ratio between them.

The given series is an geometric series, the details of the series are:

a₁ = 150

r = 60/150 = 0.4

n = 7

The sum of the geometric series is,

S = 150(1-0.4⁶)/(1-0.4)

S = 248.976 ≈ 249

Hence, the sum of the first seven terms of the series is 249.

Learn more about Geometrical Series:

brainly.com/question/4617980

#SPJ1

4 0
2 years ago
Read 2 more answers
Help me plzzz kinda confused on this sqaure stuff
balandron [24]

Answer:

The square JKLM is a square with 4 right angles

It is a parallelogram

Step-by-step explanation:

3 0
3 years ago
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