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jeka57 [31]
3 years ago
11

Suppose we take two different random samples from the same population of test scores. The population mean and standard deviation

are unknown. The first sample has 25 data values. The second sample has 64 data values. Then we construct a 95% confidence interval for each sample to estimate the population mean. Which confidence interval will have greater precision (smaller width) for estimating the population mean?
A.The confidence interval based on the sample of 64 data values will be more precise.
B. Both confidence intervals will have the same precision.
C. The confidence interval based on thesample of a5 data valus will b moreprecisa
Mathematics
1 answer:
ANTONII [103]3 years ago
7 0

Answer:

A.The confidence interval based on the sample of 64 data values will be more precise.

Step-by-step explanation:

Given that we take two different random samples from the same population of test scores.

The population mean and standard deviation are unknown.

The first sample has 25 data values. The second sample has 64 data values.

When sample sizes grow the confidence interval will be narrower this is due to the reason that margin of error depends on standard error which in turn is inversely proportional to square root of sample size.

So we find that A.The confidence interval based on the sample of 64 data values will be more precise.

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Which of the following is the correct conversion of 12 feet into inches? A. 1 ft. B. 12 in. C. 144 in. D. 4 yd.
goldenfox [79]

Answer:

144

Step-by-step explanation:

12x12

7 0
4 years ago
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State whether the data described below are discrete or​ continuous, and explain why. The maximum capacities of various stadiums
Andreyy89

Answer:

C.

Step-by-step explanation:

When a data is continuous, the values it can take are the real numbers, this means it can take any value in an interval.

When a data is discrete, the values can take only certain values in an interval, this data usually refers to natural numbers.

In the case of the maximum capacities of various stadiums it is clear that their capacities can only be found in the natural numbers (a stadium cannot have a capacity of 4647576.56 people or any number with a decimal). Therefore, the data are discrete because it can take only some specific values.

Thus, the correct answer is C.

5 0
3 years ago
What is the equation of the line that passes through the points (-1, 7) and (2, 10) in Standard Form?
Usimov [2.4K]

bearing in mind that standard form for a linear equation means

• all coefficients must be integers, no fractions

• only the constant on the right-hand-side

• all variables on the left-hand-side, sorted

• "x" must not have a negative coefficient

\bf (\stackrel{x_1}{-1}~,~\stackrel{y_1}{7})\qquad (\stackrel{x_2}{2}~,~\stackrel{y_2}{10}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{10-7}{2-(-1)}\implies \cfrac{3}{2+1}\implies \cfrac{3}{3}\implies 1

\bf \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-7=1[x-(-1)]\implies y-7=x+1 \\\\\\ y=x+8\implies \boxed{-x+y=8}\implies \stackrel{\textit{standard form}}{x-y=-8}

just to point something out, is none of the options, however -x + y = 8, is one, though improper.

3 0
3 years ago
April claims that 1 + cos2(theta) / sin2(theta)= 1 / sin2(theta) is an identity for all real numbers thetatheta that follows fro
Arte-miy333 [17]

Answer:

3

Step-by-step explanation:

6 0
3 years ago
Let f(x)=11-3xm compute f(2)+f^-1(2)
Ganezh [65]
Taking f(X) to be y
Y = 11 - 3X
3X = 11 - y
X  = (11-y)÷3
F^-1(x) = (11 - x)÷3 addING both equations
It gives = 0

Please mark as brainliest
8 0
3 years ago
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