Posted: September 17th, 2017
Paper Details
(iv) at most 3 are defective. (v) exactly 3 are defective
(i) Find the area under the normal curve between z = 0 andz = 1.75
(ii) Find the area under the normal curve between z = -1.5 andz = 2.6
(iii) Find the area to the left side of z = 1.96
(iv) Find the area under the normal curve which lies to the rightof z = 2.70
(v) A normal distribution has mean = 50 and standard deviationis 8. Find the probability that x assumes a value between 34and 62
(vi)A normal distribution has mean = 20 and S.D = 10. Findarea between x =15 and x = 40
(vii) Given a normal curve with mean 30 and standard deviation Find the area under the curve between 26 and 40
X | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 11 | 12 |
Y | 9 | 8 | 7 | 9 | 11 | 12 | 15 | 16 | 8 |
Produced by the company, test the hypothesis m=1600 hours against the alternative hypothesis m ¹ 1600 hours using a 5% level of significance.
7(a) On Saturdays, cars arrive at Sami Schmitt’s Scrub and Shine Car Wash at the rate of 6 cars per fifteen minute interval. The average interarrival time between cars is _____________.
(b) . On Saturdays, cars arrive at Sami Schmitt’s Scrub and Shine Car Wash at the rate of 6 cars per fifteen minute interval. The probability that at least 2 minutes will elapse between car arrivals is _____________.
( c ) On Saturdays, cars arrive at Sami Schmitt’s Scrub and Shine Car Wash at the rate of 6 cars per fifteen minute interval. The probability that at least 5 minutes will elapse between car arrivals is _____________.
(d) On Saturdays, cars arrive at Sami Schmitt’s Scrub and Shine Car Wash at the rate of 6 cars per fifteen minute interval. The probability that less than 10 minutes will elapse between car arrivals is _____________.
8 ( a) If x is uniformly distributed over the interval 8 to 12, inclusively (8 x 12), then the P(9 x 11) is __________________.
(b ) If x is uniformly distributed over the interval 8 to 12, inclusively (8 x 12), then the P(10.0 x 11.5) is __________________.
( c ) If x is uniformly distributed over the interval 8 to 12, inclusively (8 x 12), then the P(13 x 15) is __________________.
( d ) If x is uniformly distributed over the interval 8 to 12, inclusively (8 x 12), then P(x< 7) is __________________.
( e ) If x is uniformly distributed over the interval 8 to 12, inclusively (8 x 12), then P(x 11) is __________________.
( f ) If x is uniformly distributed over the interval 8 to 12, inclusively (8 x 12), then P(x 10) is __________________.
(9) Using exponential smoothing (i) with a = 0.20 (ii) with a = 0.80
July | 12 |
Aug | 5 |
Sept | 7 |
Oct | 11 |
Compute
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