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October 23, 2014

Search: Statstics

Number of results: 13

statstics
Considering that a researcher can test at the <p = .05 (95%), p = .01 (99%), or p = .001 (99.9%) level for statistical significance, how do you use these three levels in relationship to evaluate risk to patients in implementing the decisions based on research findings?
August 17, 2011 by Anonymous

statstics
construct a 90 confidence interval for the population mean μ. assume the population has a normal distribution. A sample if 15 randomly selected math majors has a grade point average of 2.86 with a standard deviation od 0.78. Round to the nearest hundredth
April 14, 2013 by Anonymous

statstics
a population of score has u=50 and standard devidation =10 if every score in the population is multipied by 2 the new mean and standard would be
September 26, 2011 by mary

statstics
A real estate company is selling 32 houses. One of the houses costs $834,000, but in order to attract more buyers, the price is dropped to $819,000. By how much does this change the average price of the 32 houses?
February 28, 2013 by ellas

Statstics
Let's pretend the Work variable is normally distributed, with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 50 percent of SOC 390 students work more than ____ hours per week (round answer to the nearest ...
September 9, 2014 by Chris

Statstics
A loaf of bread is normally distributed with a mean of 22 ounces and a standard deviation of .5 ounces. What is the probability that a loaf of bread is <21 ounces?
March 28, 2010 by Anonymous

statstics
The lengths of the eggs of a species of bird are roughly normally distributed, with a mean of 32 mm and an SD of 1.2 mm. 1.Approximately what is the 99th percentile of the lengths? Give your answer in mm but please do not enter the units. 2.Approximately 50% of the eggs have ...
March 13, 2013 by ellas

statstics
The lengths of the eggs of a species of bird are roughly normally distributed, with a mean of 32 mm and an SD of 1.2 mm. 1.Approximately what is the 99th percentile of the lengths? Give your answer in mm but please do not enter the units. 2.Approximately 50% of the eggs have ...
March 14, 2013 by ellas

statstics
A distribution of weights is symmetric about its median. The lower quartile of the weights is 90 pounds and the median is 120 pounds. Find the interquartile range of the distribution.
March 2, 2013 by ellas

Statstics
Cities A, B, C and D are equidistant. That is, B is d miles from A, C is d miles from B, and D is d miles from C. Suppose you travel 55 mph from A to B, 40 mph from B to C, and 50 Mph from C to D. What single, constant speed could you have traveled from A to B to C to D that ...
May 3, 2011 by Robo

Statstics
. You have proposed that males will outscore females on a standardized test of math skills. You now are looking at your results from an SPSS t-test which is analyzing for significance at the = .05 level with a two-tailed test. You see the following output: t = 4.10 sig. = ....
December 6, 2011 by Linda

statstics
a report says 65% of vechiles sold were SUV's. A random sample of 100 vechiles sold in last month is taken. Use the central limit theorem, find the probability that most 70% of the vechiles in the sample were SUV's
August 25, 2014 by bob

Statstics
Let x be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a normal distribution with \alpha =2.3% A random sample of 18 Australian bank stocks has a sample mean of x bar = 6.1%. For the entire Australian stock market, the mean ...
August 7, 2011 by Justina

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