28,
70 + 35 = 105, then divide by 3,000 which equals 28.57142857143, but you want a full human so you round down to 28
Answer:
1/4
Step-by-step explanation:
Yes
11 diveded by 30 equals 61%
30 divided by 45 equals 66%
the average of 61% and 66% is more then 50%
Answer:
Yes. The data provide enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.
P-value=P(t>2.84)=0.0024
Step-by-step explanation:
Hypothesis test on the population mean.
The claim is that the mean weight of one-year-old boys is greater than 25 pounds.
Then, the null and alternative hypothesis are:

The significance level is α=0.05.
The sample size is n=354. The sample mean is 25.8 pounds and the sample standard deviation is 5.3 pounds. As the population standard deviation is estimated from the sample standard deviation, we will use a t-statistic.
The degrees of freedom are:

The t-statistic is:

For a right tailed test and 353 degrees of freedom, the P-value is:

As the P-value is smaller than the significance level, the effect is significant and the null hypothesis is rejected.
There is enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.
Answer:-7
Step-by-step explanation:
24-8i=10-10i
24-10=-10i+8i
14=-2i
I=-7