using the information from the uploaded picture: a) (Use a calculator to calculate x1, s1, x2, and s2. (Round your answers to four decimal places.) b) State the null and alternate hypotheses. H0: ?1 = ?2; H1: ?1 ≠ ?2 H0: ?1 = ?2; H1: ?1 > ?2 H0: ?1 > ?2; H1: ?1 = ?2 H0: ?1 = ?2; H1: ?1 < ?2 c) What sampling distribution will you use? What assumptions are you making? The Student's t. We assume that both population distributions are approximately normal with known standard deviations. The Student's t. We assume that both population distributions are approximately normal with unknown standard deviations. The standard normal. We assume that both population distributions are approximately normal with unknown standard deviations. The standard normal. We assume that both population distributions are approximately normal with known standard deviations.
using the information from the uploaded picture:
a) (Use a calculator to calculate x1, s1, x2, and s2. (Round your answers to four decimal places.)
b) State the null and alternate hypotheses.
H0: ?1 = ?2; H1: ?1 ≠ ?2
H0: ?1 = ?2; H1: ?1 > ?2
H0: ?1 > ?2; H1: ?1 = ?2
H0: ?1 = ?2; H1: ?1 < ?2
c) What sampling distribution will you use? What assumptions are you making?
The Student's t. We assume that both population distributions are approximately normal with known standard deviations.
The Student's t. We assume that both population distributions are approximately normal with unknown standard deviations.
The standard normal. We assume that both population distributions are approximately normal with unknown standard deviations.
The standard normal. We assume that both population distributions are approximately normal with known standard deviations.
In order to determine whether the mean rate of hay fever per 1000 population for people over 50 years old is significantly less than that for people under 25 years old, conduct a two mean comparison hypotheses test.
The hypothesis test will contain two hypotheses: the null hypothesis and the alternate hypothesis. The alternate hypothesis is about the claim which is to be tested. If the population standard deviation for both the populations is known and both the sample sizes are 30 or greater than 30, then the sampling distribution can be assumed as a normal distribution.
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