State the properties of s normal distribution.

A normal distribution of scores has a standard deviation of 10. Find the z-score fir the following value: A score that is 20 points above the mean.

Watch this Khan Academy Empirical Rule video: https://www.youtube.com/watch?v=OHR126AFFBU Use the Empirical Rule. (Do not use technology. Technology will give a slightly different answer.) Draw a sketch of the normal distribution and label the mean and 1, 2, and 3 standard devitons above and below the mean with computed values. Assume that the weight of 1-year-old girls in the USA is normally distributed with Mean = 9.5 kg, Standard Deviation = 1.1 kg. (a) 68% of the data is between which 2 values? kg -- kg (b) 95% of the data is between which 2 values? kg -- kg (c) What percentage of the data is less than 8.4 kg? rse (d) What percentage of the data is between 7.3 kg and 11.7 kg? (w) What percentage of the data is more than 12.8 kg? Submit Question ere to search R

Porosity measurements in an oil field show a normal distribution witha mean of 5% and a standard deviation of 1%. Determine the probability of porosity to be more than 6%.

The random variable X has a uniform distribution with values between 15 and 25. What is the mean and standard deviation of X?

The one in the yellow is the previous tab.

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The tensile strength of paper can be modelled by a normal distribution with a mean of 240kPa and standard deviation 15kPa. What is the probability that the tensile strength will be between 226kPa and 243kPa? O 0.1753 0.1587 0.5793 0.4039

☐True ☐FalseA normal distribution is necessarily unimodal.

Fawns between 1 and 5 months old have a body weight that is approximately normally distributed with mean ? = 27.1 kilograms and standard deviation ? = 4.0 kilograms. Let x be the weight of a fawn in kilograms.