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Q1. A pistachio rancher buys a new fertilizer system that is supposed to increase the yield per acre. She uses the system for one year and notes the following output per acre:
71.7 46.0 103.9 54.4 43.3 68. 1 73.4 45.1 45.6 44.9 77.8 50.5
a) Calculate the Average yield per acre
b) Calculate the Standard deviation
Why does APA recommend that we calculate a measure of effect size in addition to calculating the test statistic?
The sample yielded a mean content of 19.88 ounces with a standard deviation of 0.35 ounces. At 95% confidence using the p-value approach, test the hypothesis.
Sam Sleep researcher hypothesizes that people who are allowed to sleep for only four hours will score significantly lower than people who are allowed to sleep for eight hours on a management ability test.
A student is selected at random from the class. What is the probability that the student is both a junior and an economics major?
question each time that a shopper purchases a tube of toothpaste she chooses either brand a or brand b. suppose that
Fidelity Magellan is a large cap growth mutual fund and Fidelity Small Cap Stock is a small cap growth mutual fund (Morningstar Funds 500, 2006).
Bolts are randomly selected until a 5 mm bolt is obtained. The outcomes are the sequences of bolts that can be selected. So one outcome is 1, and the other is 342. List the equally likely outcomes.
Students from one large high school had a mean score of 58. Is there evidence to suggest that this high school is inferior?
Five horses are running in a race. I bet that Hot Shot will win first place, and Urawinner will win second. What is the probability that I will win?
A normal distribution has a mean of µ = 100 with σ = 20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X = 90 and X = 120?
Fitting a straight line to a set of data yields the following prediction line: i=2+5xi
Determine the number of successes suggested by the given statement.
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