For a random sample of 22 women, the average resting pulse rate is x = 76 beats per minute, and the standard deviation is 6.1. What is the standard error of the sample mean?

Answer: 1.30

Can you explain why answer is 1.30 and please write neatly?

2) The average scores for 25 participants is 55, with a SD of 18

Calculate the 95 % Confidence Interval. Enter the lower boundary of the interval.

Answer: 47.57

Can you explain why answer is 47.57 and please write neatly?

On a street in North York, there are 13 houses. The house on the north corner is worth $1.2 million, which is worth more than 6 houses on the street, and less than the remaining houses. The more expensive the house, the better it is.

What is the percentile of the house on the north corner in comparison to the houses on the street?

Answer: 54

Can you explain why answer is 54 and please write neatly?