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Q1) Safety director of Honda USA took samples at random from file of minor work related accidents and classified them according to time the accident took place.
Time
Number of Accidents
8 up to 9 A.M.
6
1 up to 2 P.M.
7
9 up to 10 A.M.
2 up to 3 P.M.
8
10 up to 11 A.M.
20
3 up to 4 P.M.
19
11 up to 12 P.M.
4 up to 5 P.M.
Using goodness-of-fit test and.01 level of significance, find out whether accidents are evenly distributed all through the day. Write a short description of your conclusion.
Q2) Classic Golf, Inc. manages 5 courses in Jacksonville, Florida, area. Director wants to study number of rounds of golf played per weekday at 5 courses. He gathered following sample information.
Day
Rounds
Monday
124
Tuesday
74
Wednesday
104
Thursday
98
Friday
120
At.05 significance level, is there difference in number of rounds played by day of the week?
Compute the score based on their appropriate class means and standard deviations:
Here are fifty observations on the weight of tea bags. Calculate the Standard Deviation and Variance.
A random sample of 36 days yielded the average daily output of 890.2 tons, with standard deviation of 19.8 tons. Use this information to make a 95% confidence interval for mean.
what is the probability of obtaining at least 6 cases in this class if the nationwide rate holds True?
Draw the suitable 2x2 table, compute and interpret suitable measure of association.
There are three flight phases. At α = 0.05, is the cockpit noise level independent of flight phase?
Shows a sample mean of 1,261 with a standard deviation of 59. Should Pennsylvania adopt the new system for all toll roads in the state?
Four young children were monitored closely over a period of several weeks to measure how much they watched violent television programs and their amount of violent behavior toward their playmates.
The 99% confidence interval estimate for a population variance when a sample standard deviation of 12 is obtained from a sample of 10 items is:
If she has chosen the first weeks rides, how many ways can she choose four more different rides for the second week? Assume that order does not matter.
What statistical procedure was used to analyze data in study B?
Write down the probability of that the median of the sample or average medians is greater or more than 320 minutes?
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