Answer Happy

Question 23 A null hypothesis HO was rejected at the significance level = 0.10. What will the result of the hypothesis test be at the significance level = 0.05? Not yet answered Marked out of Fail to reject HO O Reject HO O No conclusion can be made unless the precise p-value is given 3.00 Flag question Reject H1
Question 24 In March, Maggie collected the daily sales of ice-cream in Montreal (Y) and the outdoor temperature for each day (X). She computed the sample correlation coefficient between X and Y to be 0.1, and used the data to build a simple linear regression model Y = b +cX. Not yet answered Which of the following statements is true? Marked out of 3.00 The related coefficient of determination is 0.1 Flag question O Only 10% of the variation of the ice-cream sales is explained by different outdoor temperatures O 90% of the variation of the ice-cream sales is due to the variance of the sales itself. O c in the linear regression mode Y = b + cx is positive O All of the other answers are true
Question 25 The time it takes Jessica to bicycle to school is normally distributed, with a mean time of 15 minutes and a variance of 4 minutes. Jessica has to be at school at 8:00 a.m. What time should she leave her house she will be late only 4% of the time? Not yet answered Marked out of O 22 minutes before 8:00 am O 18.5 minutes before 8:00 am 3.00 O 11.5 minutes before 8:00 am Flag question O 8:00 am