The distribution of X, the number of cars sold per day, where X can be 0, 1, 2,

Question

The distribution of X, the number of cars sold per day, where X can be 0, 1, 2, 3, 4, or 5 is: a. sometimes normally distributed b. never normally distributed c. always normally distributed d. a uniform distribution e. none of the above The normal curve represents a distribution where the _________, ____________, and ____________ are equal to each other. a. range/standard deviation/variance b. mean/median/standard deviation c. model/median/standard deviation d. mean/median/mode One characteristic of a bell-shaped curve is that it is a. linear b. bi-modal c. symmetrical d. leptokurtic If a distribution of scores is normally distributed, then the distribution can be completely described by a. its mean and range. b. its mean and standard deviation. c. its mode and median d. its median and standard deviation. Z score is a type of __________ score. a. outlier b. standardized c. normalized d. t Z scores provide information about the location of raw scores a. below the mean in units of the range of the distribution: b. above the mean in units of the standard deviation of the distribution: c. above and below the mean in units of the range of the distribution d. above and below the mean in standard deviation units from the mean.

Explanation / Answer

Ans 1 uniform distribution

Because here wehave 5 sample and each have equal probability as 1/5 and distribution follow uniform

Ans 2 normal distribution in which mean median modevare equal

Ans 3bell shaped curve is symmetric

Ans4 if distrution is normal then is completely defined by ite nean and standard distribution

Ans 5 z score is a standardized score

Ans6 above and below the mean in units of the range of distribution

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