HELP ME!!!! MY HOMEWORK IS SOOO CONFUSING

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Answer 1

Answer:

i thing the answer is D the last chart

Related Questions

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-17 irrational number
3125 men and 150 women are at a wedding. Write this as a ratio of men towomen in its simplest form.
Jose is now six years older than John. In two years, Jose will be twice as old as John. How old is John now?
A mattress store sells only king, queen and twin-size mattresses. Sales records at the store indicate that the number of queen-size mattresses sold is one-fourth the number of king and twin-size mattresses combined. Records also indicate that three times as many king-size mattresses are sold as twin-size mattresses. Calculate the probability that the next mattress sold is either king or queen-size.

A bacteria culture is growing at a rate of r(t) = 7e^0.6t
thousand bacteria per hour after t hours. How much did the bacteria population increase during the first two hours? (Round your answer to three decimal places.)

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Answer:

${ \bf{r(t) = 7e {}^(0.6t) }} \n { \tt{r(2) = 7 {e}^(0.6 * 2) }} \n = { \tt{7 {e}^(1.2) }} \n = 23.241 \: thiusand bacteria \: per \: hour$

23.2 bactéria that is growing I think

The filling variance for boxes of cereal is designed to be .02 or less. A sample of 41 boxes of cereal shows a sample standard deviation of .16 ounces. Use α = .05 to determine whether the variance in the cereal box fillings is exceeding the design specification.

Answers

Answer:

$\chi^2 =(41-1)/(0.02) 0.0256 =51.2$

$p_v =P(\chi^2_(40) >51.2)=0.1104$

In order to find the p value we can use the following code in excel:

"=1-CHISQ.DIST(51.2,40,TRUE)"

If we compare the p value and the significance level provided 0.05 we see that $p_v >\alpha$ so on this case we have enough evidence in order to FAIL reject the null hypothesis at the significance level provided. And that means that the population variance is not significantly higher than 0.02, so there is no a violation of the specifications.

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

$n=41$ represent the sample size

$\alpha=0.05$ represent the confidence level

$s^2 =0.16^2 =0.0256$ represent the sample variance obtained

$\sigma^2_0 =0.02$ represent the value that we want to test

Null and alternative hypothesis

On this case we want to check if the population variance specification is higher than the standard of 0.02, so the system of hypothesis would be:

Null Hypothesis: $\sigma^2 \leq 0.02$

Alternative hypothesis: $\sigma^2 >0.02$

Calculate the statistic

For this test we can use the following statistic:

$\chi^2 =(n-1)/(\sigma^2_0) s^2$

And this statistic is distributed chi square with n-1 degrees of freedom. We have eveything to replace.

$\chi^2 =(41-1)/(0.02) 0.0256 =51.2$

Calculate the p value

In order to calculate the p value we need to have in count the degrees of freedom , on this case $df = 41-1=40$ . And since is a right tailed test the p value would be given by:

$p_v =P(\chi^2_(40) >51.2)=0.1104$

In order to find the p value we can use the following code in excel:

"=1-CHISQ.DIST(51.2,40,TRUE)"

Conclusion

Mike won 7 of his wrestling matches, lost 6 matches, and tied 2 matches. What percent of all of Mike's matches did he win?

Answers

Mike won 46.67% of all of his matches.

What is a percentage?

A ratio or value that may be stated as a fraction of 100 is called a percentage. Moreover, it is indicated by the symbol "%."

The total number of matches that Mike wrestled is:

Total matches = number of matches won + number of matches lost + number of matches tied

Total matches = 7 + 6 + 2

Total matches = 15

To find the percentage of matches that Mike won, we can use the formula:

Percentage = (Number of matches won / Total number of matches) x 100%

Plugging in the values we know, we get:

Percentage = (7 / 15) x 100%

Percentage = 0.4667 x 100%

Percentage = 46.67%

Therefore, the Percentage = 46.67%.

To learn more about the percentage;

brainly.com/question/24159063

#SPJ5

Answer:

Mike won 46.67% of his matches

Step-by-step explanation:

Mike participated in a total of 7 + 6 + 2 = 15 matches.

The percentage of matches that Mike won can be found by diving the matches he won by the total number of matches and multiplying it by 100 to convert the decimal to a percentage.

(7/15) x 100% ≈ 46.67%

Therefore, Mike won approximately 46.67% of his matches.

Each person plans to take 2 slices of pizza.mark concludes that he would get more pizza by taking 1 slice from each pizza.instead of 2 slices from the first pizza