4 A recent study observed a higher proportional of low chole

4 A recent study observed a higher proportional of low cholesterol among people with the last name of Blomarz. A hypothesis test was conducted with H0: Having a last name Blomarz Does not affect cholesterol level and a P-value of 0.02 was calculated. What most likely was the conclusion of the researchers? 5. It is believed that 33% of people who play trombone are left-handed. We are interested in knowing if the percentage Is the same for people who play trumpet. How many trumpet Players must we survey in order to estimate the proportion of lefthanders within 5% with 95% confidence? 6. The label on a can of Blomarz Cola says has a mean of 11.3 ounces with a standard deviation of 0.4 ounces. A histogram of the sample is roughly unimodal and symmetric Does this sample give evidence that cans of Blomarz Cola are under filled?

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