Let's find the rates at which Melinda and Marcus are saving money and compare them.
Based on the table, we can see that Melinda originally had $75. Then she got $135 in 5 weeks. So the rate of saving money is (135–75)/5 = $12 per week.
This rate is unchanged for the next weeks. As we can see, she got $195 in the next 5 weeks. So she saved $60 more those 5 weeks, or the rate is $60/5 = $12 per week again.
So Melinda saved $12 per week.
As for Marcus, the equation tells us that the rate of saving money is $14 which is the coefficient in front of x.
Hence, t<span>he rate at which Melinda is adding to her savings each week is 2$
less than the rate at which Marcus is adding to his savings each week.</span>
Answer: We will not accept the null hypothesis.
Step-by-step explanation:
Since we have given that
sample size n = 1068
= 48% = 0.48
At 0.01 level of significance, z = - 2.58
Hypothesis are:
So, test statistic value would be:
So, test statistic > critical value.
Hence, we will not accept the null hypothesis.
15 over 20 equals 3 over 4
What you want to do if find 80% of the cookies, so you multiply 80% times 124 to get the total amount sold. Which equals 99.2 or 99 total.