What proportion of scores are above z-score of 1.0 in a normal distribution?
Q: What z-score is equal to P38 ? Draw a normal curve as part of your work.
A: Here we use the standard normal distribution To calculate the z score value. P38 = p{z< } is…
Q: above the population mean a raw score is. Then what z-score value separates the highest 70% of the…
A: Given that Z-score is a measure of how many standard deviations below or above the population mean…
Q: What proportion of scores are below z score of 1.0 in a normal distribution?
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Q: What percentage of z-scores in the standard normal distribution are greater than z = -1.40?
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Q: Determine the percentage of scores for a normal curve between z = -0.9 and z = -1.55
A: The z-scores are -0.9 and -1.55.
Q: What is the z-score for an exam mark of 80
A: Given that μ = 71 and σ = 6 And we have to find the z score for an exam mark of 80.
Q: When the sample size is over 30, when would the t test be used instead of normal distribution?
A: A t test will be used, when the population standard deviation is unknown and either the population…
Q: What proportion of scores in a normal distribution is below Z = -0.75?
A: Required probability is P(Z<-0.75)
Q: The top 10% of a normal distribution is above what z-score?
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Q: When finding the percentage of data in a given section of the normal curve, you are finding the…
A: here use basic of normal distribution
Q: What percentage of z-scores in the standard normal distribution are between z = -.20 and z = .40
A: Finding the p-value from z using excel
Q: What proportion of scores in a normal distribution fall below z= -1.32 ?
A: The standard normal distribution:A continuous random variable Z is said to follow standard normal…
Q: On a standard normal distribution, what percentage of scores lie within 2.89 standard deviations on…
A: We need to find the scores that lie within 2.89 standard deviations.
Q: What proportion of percentage of the normal distribution lies above z=-1 ?
A: Let Z ~N(0,1). Then, the proportion of the normal distribution lies above z=-1 is P(Z>-1).
Q: What proportion of scores of a normal distribution is less than z = - 2.15?
A: Obtain the proportion of scores of a normal distribution is less than z = – 2.15. The proportion of…
Q: What proportion of the scores in a normal distribution falls below z= -1.32?
A: Let X ~ N(0,1). Then, P(X<-1.32)=P(X>1.32) [ As X is symmetric about…
Q: In a normal distribution, what percentage of the area under the curve is within three standard…
A: We have given the following statement about normal distribution.
Q: What proportion of a normal distribution is located between the mean and z = 1.40?
A: From the given information, Mean of standard normal distribution is zero and standard deviation is…
Q: State the difference between the shape of the t distribution and the normal distribution?
A: Normal distribution is symmetric about mean and bell-shaped.
Q: On a standard normal distribution, what percentage of scores lie within 1.29 standard deviations on…
A: Given that, Standard normal distribution.
Q: 5. What proportion of a normal distribution is located between the mean and z= -1.40?
A: Here we have to find P(-1.40 < x < 0)
Q: Using the simplified version of the normal distribution, what percentage of the cases falls within 2…
A: It is given, A normal distribution with 2 standard deviation.
Q: What percentage of scores falls in the tails of a normal curve?
A: Empirical rule: According to empirical rule, 99.7% of data lies within three standard deviations of…
Q: If 120 scores are chosen from a normal distribution with mean 70 and standard deviation 8, how…
A: Given: 120 scores were chosen from a normal distribution with mean 70 and standard deviation 8.…
Q: 2. A normal distribution of scores has a mean of 120 and a standard deviation of 20.What score…
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Q: -What proportion of the normal distribution is in the tail beyond z= +2.00?
A: Normal distribution is a continuous distribution which has many real-life applications. A normal…
Q: What z-score value separates the highest 10% of the scores in a normal distribution from the lowest…
A: We want to find highest 10% value for z score
Q: What proportion of a normal distribution is located between the mean and z = -0.47?
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Q: For a normal distribution where the mean is 50 and the standard deviation is 10, what percentage of…
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Q: The quality grade-point averages of 300 college freshmen follow approximately a normal distribution…
A:
Q: What is the value of the 50th percentile in a Standard Normal distribution (mean = 0, standard…
A: The mean is 0 and the standard deviation is 1.
Q: On one exam Mike had a score of 4, which corresponded to a z-score of z = -1.50, and Sandy had a…
A: The z-score formula is, z=x-μσ In the formula, x be the score, μ be the population mean, and σ be…
Q: What proportion of scores are above z score of 0 in a normal distribution?
A: From the provided information, The proportion of scores are above z score of 0 in a normal…
Q: For a normal distribution with mean=500 and standard deviation=100, what X value separates the…
A: The normal distribution:A continuous random variable X is said to follow normal distribution if the…
Q: About what percentage of a normal distribution falls within 2.5 standard deviations of the mean?
A: 98.76 percentage of a normal distribution falls within 2.5 standard deviations of the mean
Q: What z-score value separates the highest 70% of the scores in a normal distribution from the lowest…
A: Normal distribution is given.
Q: What proportion of scores are below z-score of a +1.00 in a normal distribution?
A: Standard normal distribution: The standard normal distribution is a special case of normal…
Q: State how the difference between the shape of the t distribution and normal distribution is affected…
A: There is a property of t-distribution which indicates that with the increase in the degrees of…
Q: On a normal curve, where do most scores fall?
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Q: In a normal distribution, what is the Z-score of servation that is at the 48th percentile?
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Q: What happens to the graph of the normal curve as the mean increases?
A: The graph of the normal curve as the mean increases.
Q: n a normal distribution, what percent of scores lie between the mean and a z-score of +1.00?.
A: Let, X be a random variable which follows Normal distribution. So, Mean(μ) = 0 Standard…
Q: 3. The scores on a test approximate a normal distribution with a mean score of 72 and a standard…
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Q: In a normal distribution, a data value located 0.7 standard deviations below the mean has standard…
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Q: What are the percentages of scores that fall between -1 and 0/0 and 1? -2/1 and 2? and in the tails…
A: We solve probability value by using of empirical rule.
Q: 4. What proportion of the normal distribution is located in the tail beyond z= -1.50?
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Q: Which side will the tail be for -0.4 z score for normal distribution?
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Q: Find Pas, that is find 90 percentile of z-score from the standard normal distribution. 6.
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Q: What are the percentages of scores that fall between a)-1 and 0/0 and 1 b) -1 and -2/1 and 2)c in…
A: Given Empirical rule: For a normal distribution, 68% of values fall within 1 standard deviation of…
Q: Explain the Empirical rule and its relationship to the normal distribution 1.
A: Solution-: Explain the empirical rule and its relationship to the normal distribution.
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