I need urgent help please?

Question 1 (1 point)

In a histogram, the x-axis displays what?

Question 1 options:

frequency

bins

unable to be determined

response variable

Question 2 (1 point)

Saved

Stem-and-Leaf plots are widely used today.

Question 2 options:

True

False

Question 3 (1 point)

Values beyond the lower and upper whiskers (the min and max values) generally represent what?

Question 4 (1 point)

Saved

Scatterplots demonstrate the relationship between how many variables?

Question 5 (1 point)

Bar graphs are typically used to represent values of one variable across different levels of a categorical variable.

Question 5 options:

True

False

Question 6 (2 points)

Group A has a mean of 0 and a median of 15

What is most likely true?

Question 6 options:

None of these

Group A likely has a high outlier or skew

Group A likely has a small outlier

Group A likely has a low outlier or skew

Question 7 (2 points)

Which statement is most true?

Question 7 options:

None of the above

If you have an outlier, the mean will be most influenced

If you have an outlier, the median will be most influenced

If you have an outlier, the mean will be least influenced

Question 8 (3 points)

As the difference between the mean and median gets larger, measures of variability will likely increase

Question 8 options:

True

False

Question 9 (3 points)

Saved

What is the variance of this sample: 27, 11, 31, 55, 17?

Question 9 options:

422.36

None of these

287.20

381.78

Question 10 (3 points)

Variance is the square root of standard deviation

Question 10 options:

True

False

Question 11 (2 points)

Given a couple currently have three male children, what is the likelihood that their fourth child will also be male?

This is an example of what type of statistics?

Question 11 options:

inferential statistics

descriptive statistics

Question 12 (2 points)

With statistics, we have the data but we do not know the conditions.

Question 12 options:

True

False

Question 13 (2 points)

What type of statistics summarizes what we know from the data?

Question 14 (2 points)

Which of the following describe the Frequentist approach?

Select all that apply.

Question 14 options:

It is objective.

It is based on the long-term frequency of an event occurring.

It is based on observed data.

Two Frequentists would calculate a probability in the same way.

Question 15 (2 points)

The majority of statistics courses take the Bayesian approach.

Question 15 options:

True

False

Question 16 (2 points)

Which of the following describe the Bayesian approach?

Select all that apply.

Question 16 options:

It is based on the long-term frequency of an event occurring.

Two Bayesians could come to two separate results for the probability of a particular event occurring.

It is not meant to make any statement about a single event occurring.

It is objective.

Question 17 (2 points)

There are different ways of looking at probability.

Question 17 options:

True

False

Question 18 (2 points)

We cannot identify the sample space for multiple trials of an event.

Question 18 options:

True

False

Question 19 (2 points)

Saved

A(n) ___________ is one observation of an event.

Question 19 options:

sample space

outcome

experiment

trial

Question 20 (2 points)

The probability of all possible outcomes of an event occurring sum to what?

Question 21 (2 points)

The 4 R functions are available for every probability distribution. The only thing that changes with each distribution are the prefixes.

Question 21 options:

True

False

Question 22 (2 points)

In a binomial distribution, which R function would we use to obtain n random outcomes from the distribution?

Question 22 options:

rbinom()

dbinom()

qbinom()

pbinom()

Question 23 (2 points)

Which of the following are discrete probability distributions?

Select all that apply.

Question 23 options:

t distribution

chi-square distribution

normal distribution

binomial distribution

F distribution

Question 24 (2 points)

What does "" represent in a binomial distribution?

Question 24 options:

success probability

size parameter

results of the experiment

Question 25 (2 points)

What happens when we increase the mean of the normal distribution?

Question 25 options:

The distribution is shifted to the left.

The tails become wider and the peak decreases.

The distribution is shifted to the right.

The tails become more narrow and the peak increases.

Question 26 (2 points)

About 68% of any given data that is normally distributed will fall within 1 standard deviation of the mean.

Question 26 options:

True

False

Question 27 (2 points)

For data that is normally distributed, about 95% of observations fall within 3 standard deviations of the mean.

Question 27 options:

True

False

Question 28 (2 points)

Which is a more appropriate distribution for the following scenario?

Find the probability that an athlete finishes the race in less than 7 minutes.

Question 28 options:

normal distribution

binomial distribution

Question 29 (2 points)

Which of the following distributions are strongly related to the normal distribution?

Select all that apply.

Question 29 options:

F distribution

chi-square distribution

t distribution

binomial distribution

Question 30 (2 points)

Which of the following are true about the F distribution?

Select all that apply.

Question 30 options:

The area under the curve is 1.

The observed values on the x-axis must always be positive.

The distribution is left skewed.

There are two degrees of freedom.