Blog

State the hypotheses. A laptop manufacturer claims that the mean life of battery for a certain model of laptop is more than 12 hours.

Because ___ is rarely known, the confidence interval estimates of ____ almost _____ use the t distribution instead of the normal distribution

In 431 NFL Games that went into overtime 200 teams that won the coin toss won the game. Find the P( Atleast 200 wins) n = p = µ = np σ = square root of (npq)

Which value of r indicates a stronger correlation: r = 0.835 or r =- 0.797? Explain your reasoning. Choose the correct answer below.

Binomial Distribution is a special case of _________ (Discrete Probability Distribution) . Where it tells us if events are _______ or not. There are ___ categories acceptable/defective.

Given H0: μ≥197 and P =0.080. Do you reject or fail to reject H0 at the 0.05 level of significance?

Based on the results above, can we conclude that more than 95% of adults know twitter

If no prior data is given. How do you find n? Use question 14 to help you answer.

What is the z value of question 3?

When do you choose t distribution?