In an experiment, the class with is 9, how many classes can be formed if the range of the set of data is 270.
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Which of the following is true of the projection of two vectors X and Y?
A. The projection of X on Y equal the scalar product of Y.x where x is a unit vector in the direction of X
B. The projection of X on Y equal the scalar product of X.y where y is a unit vector in the direction of Y
C. The projection of X on Y equal the scalar product of X.y where y is a unit vector in the opp direction of Y.
D. The projection of X on Y equal the scalar product of Y.x where x is a vector perpendicular to X
Answer: B
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Statistics that deals with using a conclusion deduce from a smaller sample to make conclusion on the entire larger population is defined as
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A biologist discover that the proportion of 5 micro organisms in pond are V=24, W=36, X=15,Y=27, Z=38, determine the relative frequency of organism X
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Which of the following is not true about a normal distribution curve?
A. Most items on the curve are clustered around the variance
B. No kurtosis or skewness in the curve
C. The mean and median are equal
D. It is a unimodal symmetrical curve
Answer: A
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Evaluate P(-0.38 <=z <=1.25)
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For a certain breed of monkey in a zoo, the time to start eating when food is supply is normally distributed with mean 1.25 min and standard deviation of 0.46 min. what is the probability that the time to start eating is between 1 min and 1.75min
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If a normal distribution has u=30 and sd(a)= 5, what is the 6th percentile of the distribution?
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The width of the termite house is normally distributed with mean 3cm and standard deviation 0.14. what width value separates the widest 10% of all such house from the other 90%?
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Which of the following is not true about a binomial distribution
A. The outcome of a new trial can depend on the trial of the previous
B. The total number of trials must be known
C. The outcome in each trial can be classified as true or false
D. In each of the trials the probability of failure must remain constant
Answer: A
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