the chi-square test compares a. the difference in means for two groups at a time. b. the difference in means for more than two groups. c. the variance of one group with the variance of others. d. the difference between expected and observed frequency counts

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

The correct answer is d. the chi-squaretest compares the difference between expected and observed frequency counts.

The chi-square test is a statistical test used to analyze the distribution of categorical data. It compares the observed frequency counts of a categorical variable with the expected frequency counts.

The expected frequency counts are calculated based on a null hypothesis, which assumes that there is no significant difference between the observed and expected frequencies.

The test statistic for the chi-square test is calculated as the sum of the squared differences between the observed and expected frequency counts, divided by the expected frequency counts.

The resulting value is compared to a chi-square distribution with a certain number of degrees of freedom to determine the p-value and assess the significance of the observed difference.

Therefore, options a, b, and c are incorrect because they describe other types of statistical tests that are used to compare means or variances between groups, while the chi-square test is specifically designed for analyzing categorical data.

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Using the following image, if you EG = 59, what are x, EF, and FG.

Answers

Answer:

$x=6\,\,units\,,\,EF=34 \,\,units\,,\,FG=25\,\,units$

Step-by-step explanation:

Given: $EG =59 \,\,units$

To find: $x,EF,FG$

Solution:

From the image, $EG=EF+FG$

Put $EF=8x-14\,,\,FG=4x+1\,,\,EG=59$

$8x-14+4x+1=59\n12x-13=59\n12x=59+13\n\n12x=72\nx=(72)/(12)=6$

$EF=8x-14=8(6)-14=48-14=34\nFG=4x+1=4(6)+1=24+1=25$

Therefore,

$x=6\,\,units\,,\,EF=34 \,\,units\,,\,FG=25\,\,units$

Simplify this expression.
2^5(13 +12)

Answers

Answer:

800

Step-by-step explanation:

You do 2 to the 5 power, which equals 32. Then add 13 and 12 to get 25. Then multiply 32 and 25 to get 800

A team won 3 of their first 10 games. If they win the next n games, they will have won 50% of their games. What is the value of n?

Answers

If the team wins the next n games, the number of games they win becomes 3 + n. The total number of games is 10 + n. The ratio of games won over total number of games would be 1/2.
(3 + n) / (10 + n) = 1/2
From the equation, the value of n is 4.

50%=50/100=1/2

$(3+n)/(10+n)$ = $(1)/(2)$
solve
multiply both sides by (2)(10+n)
(2)(3+n)=(1)(10+n)
6+2n=10+n
minus n from both sides
6+n=10
minus 6 from both sides
n=4

answer is n=4

Find the sum of 8 and 492

Answers

Come on this is really easy..500

8 + 492= 500. This is so because just adding 8 ones into 492 ones is 500.

joses credit card statement says that he owes $324. he charges an additional $63, $21, and $75. how much those he owe now?

Answers

I think it would be -$483 he owes

Work out 2.64x10^x4.12x10^-3/1.6x10^-2

Answers

Answer: Answer;-

0.006798x3⋅10−2+x

Step-by-step explanation:

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