Answer:
a. The null and alternative hypothesis can be written as:
b. A Type I error is made when a true null hypothesis is rejected. In this case, it would happen if it is concluded that the actual mean outstanding credit card debt of college undergraduate is significantly less than $3173, when in fact it does not.
A Type II error is made when a false null hypothesis is failed to be rejected. In this case, the actual mean outstanding credit card debt of college undergraduate is in fact less than $3173, but the test concludes there is no enough evidence to claim that.
Step-by-step explanation:
We have a prior study of the mean outstanding credit card debt of college undergraduate that states that it was $3173 in 2010.
A researcher believes that this amount has decreased since then.
Then, he has to perform a hypothesis test where the null hypothesis states that the mean is still $3173 and an alternative hypothesis that states that the actual credit card debt is significantly smaller than $3173.
The null and alternative hypothesis can be written as:
Answer:
53.13
Step-by-step explanation:
mJKL = sin-1(9/15) = 36.9 deg
mKJL = = 36.9 deg ...base angles of isosceles triangle JKL
mJLK = 180 - 36.9 - 36.9 = 106.26 deg
mJPK = mJLK/2 = 106.29/2 = 53.1 deg......half of central angle
Answer:
6:15
Step-by-step explanation:
because if you multiply 3 by 2 and 5 you will get 6:15 you can also divide 6 and 15 by 3
Hope this is helpful and correct
Answer:
B if its right i better get brainly list or a follow on ig
Step-by-step explanation:
1nspired_jay
Answer:
12 boys
Step-by-step explanation:
2 : 1 = 24 : 12