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You want to determine the effect of soap on bacterial colonies. In order to make sure that the environment does not affect your experiment, you divide 12 different petri dishes in half - one side is exposed to soap, the other is a control. You measure the number of colonies that grow in each petri dish and come up with the following results:
petri dish; 1 2 3 4 5 6 7 8 9 10 11 12
soap; 10 5 7 10 19 11 13 17 19 8 11 10
control; 20 17 11 17 26 18 21 25 24 17 17 17
Perform a complete one sided hypothesis test (why?) to see if there is a difference in bacterial colonies between the soap and control dishes.
Again - notice that other than using a one sided test you are given no advice. You need to figure this out on your own, although this one should be a bit easier than
which of the following could not be the value of a correlation
Find E(X). (Note that when a bet is won, the $1 that was bet is returned to the bettor in addition to the $1, $2, or $3 that is won, but the returned dollar does not count as part of the winnings.)
Construct a decision tree and determine the optimum decision for an engineer in business for himself.
assume that a quality characteristic is normally distributed. an x-bar control chart is constructed with 3 sigma
if the null hypothesis that two means are equal is true where will 99 of the computed z-values lie between?a.
"Strategizing for the future" is management lingo for sessions that help managers make better decisions.- Test the effectiveness of the program, using α = 0.05.
The average gasoline price of one of the major oil companies in Europe has been $1.25 per liter. Recently, the company has undertaken several efficiency measures in order to reduce prices.
Determine the standard error of the proportion. What is the probability that more than 70.4% of consumers will indicate they like the drink?
a poll was conducted by making random phone calls to people in the united states. 3000 people called agreed to
The UNESCO Institute for Statistics reported that the literacy rate in Zimbabwe was 88.5% for males and 84.6% for females.
Life insurance A life insurance company sells a term insurance policy to a 21-year-old male that pays $100,000 if the insured dies within the next 5 years.
What is the probability of a 'head' in a single toss of this coin? If the coin is tossed and a 'head' results, what is the probability that p is 3/4?
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