Group like terms together. We'll get 4x on the left side of our equation and 16 on the right side. Then 4x = 16, and x = 4 (answer)
Answer:
D)Yes, because the difference in the means in the actual experiment was more than two standard deviations from 0.
Step-by-step explanation:
We will test the hypothesis on the difference between means.
We have a sample 1 with mean M1=18.2 (drug group) and a sample 2 with mean M2=15.9 (no-drug group).
Then, the difference between means is:

If the standard deviation of the differences of the sample means of the two groups was 1.1 days, the t-statistic can be calculated as:

The critical value for a two tailed test with confidence of 95% (level of significance of 0.05) is t=z=1.96, assuming a large sample.
This is approximately 2 standards deviation (z=2).
The test statistict=2.09 is bigger than the critical value and lies in the rejection region, so the effect is significant. The null hypothesis would be rejected: the difference between means is significant.
Answer:
Step-by-step explanation:
<u>Given function:</u>
<u>The base of the growth rate is:</u>
It represent a 1.6% of growth per year.
A.
B.
<u>p(55) = 7.42 means:</u>
- 55 years after 1963, in the year 2018, the population of Earth is 7.42 billions
Answer: 32 pints
Explanation:
.16 x 25 = 4 gallons convert to pints
1 gallon is equal to 8 pints so 4 x 8 = 32 pints