Which of the following conclusions is not equivalent to rejecting the null hypothesis?
a. The results are statistically significant.
b. The results are not statistically significant.
c. The alternative hypothesis is accepted.
d. The p-value (the significance level)
Question 2
A store manager is trying to decide whether to price oranges by weight, with a fixed cost per pound, or by the piece, with a fixed cost per orange. He is concerned that customers will choose the largest ones if there is a fixed price per orange. For one week the oranges are priced by the piece rather than by weight, and during this time the mean weight of the oranges purchased is recorded for all customers who buy 4 of them. The manager knows the population of weights of individual oranges is bell-shaped with mean of 8 ounces and a standard deviation of 1.6 ounces. If the 4 oranges each customer chooses are equivalent to a random sample, what should be the approximate mean and standard deviation of the distribution of the mean weight of 4 oranges?
a. mean = 32 ounces, standard deviation = 6.2 ounces
b. mean = 8 ounces, standard deviation = 1.6 ounces
c. mean = 8 ounces, standard deviation = 0.8 ounces
d. mean = 2 ounces, standard deviation = 0.4 ounces
Living in groups and the many eyes hypothesis.
Insect species diversity on British host trees supports the area hypothesis.
The clonal selection hypothesis
The trophic cascade hypothesis.
Joseph Moore and His Family (1839), by Erastus Salisbury Field, reflects the emerging middle-class f
Calico cat illustrates the Lyon hypothesis