Fall 2007 Test 2 Math 1P98

Fall 2007 Test 2 Math 1P98 - Test 2a Math 1P98 Nov 9 2007...

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Name . ............................................ Box number . .......................... A non-graphing calculator and one handwritten half piece of coloured paper are the only aids allowed. Use at least 3 sig dig throughout. Plan your time well. Good Luck! .......................................................................................................................................... [3] 1 . Consider the following dotplot. The population mean is 18.5 and the standard deviation is 11.08. Many samples of size 40 were taken from this population a. Sketch the shape of the graph of the means of these samples. b. The mean of the distribution of these sample means is . ................ and the standard deviation is . .................... [5] 2a . The mean weight of a sample of 36 carrots from a certain seed was 115 g with standard deviation 18 g. How many carrots need to be weighed in order to be 95% confident of being within 3 g of the population mean weight? b. The mean of a sample of 45 carrots from another seed type were weighed. In a hypothesis test to determine at the 1% significance level whether this type of seed produced a heavier carrot than the seed of part 2a , the formula used for the test statistic is: and the critical value is . ............................ C5
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This note was uploaded on 11/04/2011 for the course MATH Math 1P98 taught by Professor D.miners during the Fall '11 term at Brock University, Canada.

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Fall 2007 Test 2 Math 1P98 - Test 2a Math 1P98 Nov 9 2007...

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