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one-sample inf HT

# one-sample inf HT - Practice Problems for One-sample...

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Practice Problems for One-sample Inference — Hypothesis Testing © 2010 Radha Bose FSU Department of Statistics 2 5. Thirty randomly selected types of calculators had a mean cost of \$200. The population distribution of all such costs has standard deviation of \$45. We want to know if the sample data indicate that the mean cost of all types of calculators is different from \$180. Conduct an appropriate hypothesis test using the P-value approach , detail all the steps and use 0.01 α = . 6. Forty-five employees at a certain hospital spent a mean of \$9.50 at the hospital cafeteria. We want to know if this indicates that the mean amount spent at the cafeteria by all the hospital's employees is not \$10. Conduct an appropriate hypothesis test using the P-value approach , detail all the steps and use 0.1 α = . The standard deviation of the amounts spent by the sample of employees was \$1.96. 7. Sixty bicyclists took a mean of 34.8 mins to finish a race. We wish to know if these observations indicate that, for all bicyclists who might enter this particular race, the mean finishing time would be less than 40 mins. In general, the finishing times for this race vary with standard deviation 12.5 mins.
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one-sample inf HT - Practice Problems for One-sample...

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