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A subject is asked to pick the suit of a card that she does not see, picked at random from a standard deck of playing cards. If the subject has no extra-sensory powers (ESO) her guesses should be correct, on average, 1 in 4 times. However, if she has ESP then the proportion of correct guesses should be better than 1 in 4.
(a) If the subject gets the suit correct 120 times in 400 trials, test (at the 5% level of significance) the statistical evidence that the subject might have ESP.
(b) Calculate the p-value for the test statistic value in (a) and interpret it.
In a survey of 284 smokers, 197 smokers reported that they wanted to quit smoking. Compute a 90% confidence interval for the true proportion of smokers that want to quit smoking.
how to calculate mean, median and the range on the following data: 15 18 23 22 21 18 14 20 25 12
1) A certain brand of batteries has a lifetime that has a normal distribution with a mean of 3,800 hours and a standard deviation of 390 hours. b) What lifetime should the manufac
find a distribution with 10 values between 0 and 10 that has as large a variance as possible
State the main reason because of which the differences between a Cash Book and Bank Passbook. Ans. The difference can be stated as follows a) Sometime cheque issued to party on t
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Linear regression is widely used in biological behavioral and social sciences to describe relationship between variables. It ranks as one of the most important tools used
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A company prepares dinners for several airlines, and sales average 300,000 meals per month. The significant costs of each dinner prepared are for the meat, veg,plastic trays, and u
5. Perform a factorial MANOVA on the data. Before interpreting the multivariate results of the MANOVA, check outcomes that test other assumptions for this statistic: equality of co
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