Question

1). The weights certain population of fish follow a normal distribution with a mean of 36 ounces and a standard deviation of 1.7 ounces. If you catch a fish with a standard score (or z-score) equal to zero, then this fish weights ___________ ounces

2). If my 95% confidence interval for ? is given by (0.75, 0.91), then what is the value for ?̂ that was used to calculate the interval?

3). Scores on the Medical College Admissions Test (MCAT) are normally distributed, with a mean of 501.8 points and a standard deviation of 9.5 points. If Meredith scored 520.8 on this test, what percent of people scored higher than Meredith?

4). It is a fact that 14% of all greyhound dogs are brown in color. Let’s say we are interested in taking asample of n = 50 dogs. What is the standard deviation of the sampling distribution of ?̂ for a sample of size n = 50? Round your answer to 4 decimal places

Answer 1