Read the statement shown below. "if jessica is in grade 8, then amy is in grade 9." which of these is logically equivalent to the above statement? a. if amy is in grade 9, then jessica is not in grade 8. b. if amy is not in grade 9, then jessica is not in grade 8. c. if jessica is in grade 8, then amy cannot be in grade 9. d. if jessica is not in grade 8, then amy is in grade 9.

2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain