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Fit a least square linear approximation Y=a+bX for the data X: -1, 0, 1, 2, 3 and Y: 0, 1, 2 , 9, 29
Fit a straight Line to the following data :
x:
1
2
3
4
y:
1
1.8
3.3
4.5
6.3
A certain cubical dice was thrown 9000 times and 5 or 6 was obtained 3240 times. On the assumption of certain throwing , do the data indicate an unbiased dice.Test the null hypothesis is accepted or not?
Fit a parabola in least square sense to the data :
x
10
12
15
23
20
y
14
17
23
25
21
A random sample of 900 member has a mean 3.4cms. Can it be reasonably regarded as a sample from a large population of mean 3.2cms and S.D. 2.3cms??
A certain type of flashlight battery lasts on the average of 5 years with a standard deviation of 0.75 year. Assuming that the battery lives are normally distributed, find the probability that a given battery will last less than 3.5 years Find the probability
The result of NAT scores in Mathematics are normally distributed with μ=70 and σ=10. What is the percentile rank of a score of 75?
In a recent survey of full-time female workers ages 22 to 35 years, 46% said that they would rather give up some of their salary for more personal time.Suppose you select a sample of 100 full-time female workers 22 to 35 years old. What is the probability that in the sample, fewer than 60% would rather give up some of their salary for more personal time?
A game costs $9.00 to play. In the game, there is a bag that contains 14 balls; 4 are red, 8 are green, and 2 are yellow. The player of the game draws one ball at random from the bag, and the player wins $15.00 if they draw a red ball, nothing if they draw a green ball, and $19.00 if they draw a yellow ball. What is the expected value of this game for the player? Round your answer to the nearest cent
The heights of oshs male students in your school 33are distributed with a mean of 156cm and standard deviation of 10 cm. Describe the sampling distribution of 20 students
