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denis-greek [22]
3 years ago
8

??????((((((((??????????

Mathematics
1 answer:
mart [117]3 years ago
5 0

Answer:

G. 17.3

solution:

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There are 99 males and 121 females participating in a marathon. What percent of the participants are female?​
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To do this, we first want to see how many participants there are in total by adding both males and females.

99+121=220

Now we know that there were 220 total participants, but only 121 were females.

This allows us to set up the fraction 121/220= the percent female.

\frac{121}{220} =0.55

or 55%

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2 years ago
What equation do you get when you solve ............. ky-bf=fy/m for y?
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A research group wants to know if the online platform to play Settlers of Catan is being accessed more after the stay at home or
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Answer:

a) The P-value is 0.

At a significance level of 0.05, there is enough evidence to support the claim that the online platform was accessed significantly more so than before the stay at home order.

b) Effect size d = 0.77

Medium.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that the online platform was accessed significantly more so than before the stay at home order.

Then, the null and alternative hypothesis are:

H_0: \mu=1000\\\\H_a:\mu> 1000

The significance level is 0.05.

The sample has a size n=108000.

The sample mean is M=1378.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=489.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{489}{\sqrt{108000}}=1.488

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{1378-1000}{1.488}=\dfrac{378}{1.488}=254.036

The degrees of freedom for this sample size are:

df=n-1=108000-1=107999

This test is a right-tailed test, with 107999 degrees of freedom and t=254.036, so the P-value for this test is calculated as (using a t-table):

\text{P-value}=P(t>254.036)=0

As the P-value (0) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

At a significance level of 0.05, there is enough evidence to support the claim that the online platform was accessed significantly more so than before the stay at home order.

The effect size can be estimated with the Cohen's d.

This can be calculated as:

d=\dfrac{M-\mu}{\sigma}=\dfrac{1378-1000}{489}=\dfrac{378}{489}=0.77

The values of Cohen's d between 0.2 and 0.8 are considered "Medium", so in this case, the effect size d=0.77 is medium.

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3 years ago
Mason use ⅙ of a gram of honey to make 3/10 of a pan of pudding. How many grams of honey are needed to make a full pan of puddin
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Answer:

I was going to give the answer but i keep getting it wrong, I am so sorry for wasting your time. IK i shouldn't be answering if I dont have the answer but i need the points. I feel terrible about this.

Step-by-step explanation:

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The number of students at maritas school decreased to 98 percent of last years number. Currently, there are 1,170 students. How
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