Question

Please answer True or False for the following statements:

1.) In hypothesis testing, if the null hypothesis is rejected, then the alternative or motivated hypothesis must also be rejected.

2.) Under certain conditions, binomial distributions can be approximated by normal distributions.

3.) Using a normal distribution to approximate binomial probabilities is extremely accurate, but takes an excessive amount of time and should be avoided.

4.) A bell-shaped curve is still normal, even if the mean, median, and mode are not the same.

5.) Under a one-tailed test with the level of significance set at .05, the probability of erroneously rejecting a true hypothesis is .05.

Answer #1

(1) False

> If the null hypothesis is rejected, it favours in the support of alternative hypothesis. So, the alternative hypothesis is accepted.

(2) True

> The condition is that the sample size (n) must be sufficiently large such that np>10 and n(1-p)>10.

(3) False

> The normal distribution to approximate binomial distribution is not accurate, but it is easy to use and doesn't take too much time.

(4) False

> For normal distribution mean, median and mode are same.

(5) True

> Type I error is the rejecting a true null hypothesis. And the probability of type I error is equal to the significance level. So the probability of erroneously rejecting a true hypothesis is 0.05.

Please answer True or False for the following statements:
1.) The question "do more than 40% of bird owners own cats"
leads to a two-tailed test?
2.) The graph of the normal distribution is perfectly
symmetrical, or a mirror image about the mean.
3.) In hypothesis testing, the alternative or motivated
hypothesis is assumed to be true.
4.) Type 1 error is the error we make in failing to reject the
null hypothesis.
5.) For a normal curve, about 95%...

Which of the following statements about rejecting the null
hypothesis is true? Group of answer choices If the p-value is such
that you can reject Ho for a 5% level of significance, you can
always reject it for a 1% level of significance. If the sample data
is such that for a one-tailed test of the mean you can reject Ho at
the 1% level of significance, you can always reject Ho for a
two-tailed test at the same level...

1. Which of the following statements is correct?
a. The median can be strongly influenced by just one or two
very low or high values.
b. The mode gives equal consideration to even very extreme
values in the data.
c. There will be just one value for the mean, median , and mode
in the data set.
d. The mean is able to make the most complete use of the data
when compared to the median and mode.
e. None...

Do all the following problems.
I. Choose the best answer for each
multiple choice. Please use CAPITAL letters to indicate your answer
and write neatly. (30 points)
1. ____ 4.____ 7. ____ 10.____ 13.
____
2. ____ 5.____ 8. ____ 11.____ 14.
____
3. ____ 6.____ 9. ____ 12.____ 15.
____
Whenever the population standard deviation is unknown and the
population has a normal or near-normal distribution, which
distribution is used in developing an interval estimation?
A. standard distribution
B....

MATHEMATICS
1. The measure of location which is the most likely to
be
influenced by extreme values in the data set is the a. range
b.
median c. mode d. mean
2. If two events are independent, then a. they must be
mutually
exclusive b. the sum of their probabilities must be equal to one
c.
their intersection must be zero d. None of these alternatives
is
correct. any value between 0 to 1
3. Two events, A and B,...

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