Statistics

i need the right answers for these questions thank you

Question 14 (1 point) The ages of participants in a bonspiel are normally distributed, with a mean of 40 and a standard deviation of 10 years. What percent of the curlers are between 30 and 50? 34% 50% O 20% O 68%Question 3 (1 point) Jayma recorded the time it takes her to get to school using three different routes. Hour 2 3 4 5 Route 1 (min) 12 11 12 Route 2 (min) 14 9 12 12 10 Route 3 (min) 6 14 10 9 11 On which route does Jayma have a more consistent travel time? Route 3 Route 2 Route 1 Question 4 (1 point) Determine the percent of data between the following z-scores: z = -0.45 and z = -0.15. 11.40% 76.68% 32.64% 44.04%Question 5 (1 point) Determine the percent of data to the right of the z-score: z = -1.96. 1.50% 98.50% 97.50% 2.50% Question 6 (1 point) Determine the z-score for the given value, to the nearest tenth. H - 67, 0 = 7, x = 54 Your Answer: AnswerQuestion 9 (1 point) Determine the percent of data to the left of the z-score: z-0.87. ( 77.94% 78.23% 79.71% 80.78% Question 10 (1 point) A teacher is analyzing the class results for a physics test. The marks are normally distributed with a mean (u) of 73 and a standard deviation (o) of 2. Determine Guy's mark if he scored u + 20. Your Answer: AnswerQuestion 13 (1 point) A company measured the lifespan of a random sample of 30 light bulbs. Times are in hours. 1013 959 999 1010 1046 941 970 909 1075 918 1025 1024 1065 1065 1043 1041 993 987 955 1050 1018 914 933 1069 916 956 1046 976 926 923 Determine the mean, to one decimal place. Your Answer: AnswerQuestion 7 (1 point) An auditor tested the lifespan of 9 light bulbs to verify consistency in their lifespan. The following numbers represent the time, in hours, before they burnt out. 1070.34 909.20 941.83 1034.38 936.33 1042.40 951.74 1023.96 1080.42 Determine the standard deviation, to one decimal place. Your Answer: Answer units Question 8 (1 point) A poll was conducted about an upcoming election. The results are considered accurate within 12. 7 percent points, 19 times out of 20. State the confidence level. 94.6% 19% 95% 9%Question 1 (1 point) A set of data is normally distributed. What percent of the data is within one standard deviation of the mean? almost 100% about 95% about 68% about 50% Question 2 (1 point) A set of data is normally distributed. What percent of the data is within three standard deviations of the mean? about 68% O almost 100% about 50% about 95%Question 11 (1 point) Which set is normally distributed? Interval 0-9 10-19 20-29 30-39 40-49 50-59 Set A. 84 72 75 75 72 Set B. 64 13 57 91 96 43 Set C. 20 35 35 35 45 55 55 Set D. 64 48 38 72 55 87 Set D. Set A. Set C. Set B Question 12 (1 point) A poll was conducted about an upcoming election. The result that 44% of people intend to vote for one of the candidates is considered accurate within #2.7 percent points, 19 times out of 20. State the confidence interval. 44% 46.7% 41.3% 46.7% 41.3% 44% 42.65% 45.35%