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Assuming that the population standard deviation is 60, how large a sample would be needed to provide a 95% confidence interval with a margin of error of 5?

Question 19 options:

959

554

24

390

The symbol p0 refers to which of the following?

Question 21 options:

the population proportion under the null hypothesis

the actual population proportion

the sample proportion under the null hypothesis

the observed sample proportion

You are testing the null hypothesis that the population mean is equal to 200. What is the rule for rejecting the null hypothesis?

Question 22 options:

p val >= a

p val

p val >= a/2

p val

In ANOVA, the degrees of freedom associated with the sum of squares error are:

Question 23 options:

k-1

nt - 1

nt - k

nt - k - 1

In ANOVA, when the observed value of F is less than 1, it means that:

Question 26 options:

One of the assumptions of ANOVA was violated

For some reason, there is more variability amongst treatment means that one would have expected by chance

This is impossible and a calculation error was made

For some reason, there is less variability amongst treatment means that one would have expected by chance

With 10 degrees pf freedom and .01 in the upper tail, which is the critical value of x2?

2.558

23.209

2.765

25.188

When is the t distribution symmetrical?

Question 30 options:

Only when n ? 30

Only when np and n(1-p) are both equal or greater than 5

Only when population is normal

Always

The probability of observing a value for a test statistic under the null hypothesis which is as extreme as, or more extreme than, the observed value of the test statistic in a given sample is called:

Question 35 options:

B (beta)

critical probability

a (alpha)

the p-value

Consider the Poisson point process on (0 , 0 ). XIt) = Number of points in [o, t] is a poisson process with parameter X. Independently, for each point in P, keep it with Probability p and delete it with probability ty I - P. Let [ It) = Number of kept points in Co, t]. Show that (rit) ) +zo is a Poisson process with parameter pd.1. a) (Poisson superposition) Flies and wasps land on your dinner plate in the manner of inde- pendent Poisson processes with respective intensities 5L and H Show that the arrivals of ying objects form a Poisson process with intensity 2. + pt. b) (Poisson thinning) Insects land in the soup in the manner of a Poisson process with intensity 1, and each such insect is green with probability p, independently of the colours of all other insects. Show that the arrivals of green insects form a Poisson process with intensity 11p. Find solutions for your home /study Withath/ statistics and probability / statisticsland probability questions and answers / in the spinner below, what is the prob Question: In THE SPINNER below, what is the probability that 3 part In THE SPINNER below, what is the probability that 3 participants out of 10, when they spin the wheeler, will land on the yellow (Y) slot Expert Answer @ helpful