True or false: Consider two normal curves. If the first one has a larger mean than...
True or false: Consider two normal curves. If the first one has a larger mean than the second one, then it also has a larger standard deviation than the second one.
true
false
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True or false: Consider two normal curves. If the first one has
a larger mean than...
Question 10 (1 point) Two normal curves have the same standard deviation but one has a...
Question 10 (1 point) Two normal curves have the same standard deviation but one has a mean of 1 whereas the other has a mean of 4. How are the two curves related? The curves are identical. The curves have the same shape but one is shifted 4 units to the right of the other. The curves have the same shape but one is shifted 3 units to the right of the other. The curves have the same mean but...
Suppose an x distribution has mean μ = 2. Consider two corresponding x distributions, the first...
Suppose an x distribution has mean μ = 2. Consider two corresponding x distributions, the first based on samples of size n = 49 and the second based on samples of size n = 81. (a) What is the value of the mean of each of the two x distributions? For n = 49, μ x = For n = 81, μ x = (b) For which x distribution is P( x > 2.5) smaller? Explain your answer. The distribution...
11 a) True or False: The t distribution has a greater standard deviation than the standard normal...
11 a) True or False: The t distribution has a greater standard deviation than the standard normal z distribution. Can you explain or prove why this is True? I have a hunch it has something to do with the sample sizes vs the population but I'm really not sure & I really like to be able to explain why things are true or false for questions like this. Thanks!
consider two objects that exactly the same shape and dimensions. the first object has a larger...
consider two objects that exactly the same shape and dimensions. the first object has a larger density than the second one. both objects are completely immersed in the water. is the buoyant force acting on the first object greater than or equal to the buoyant force acting on the second object？ Please explain
Suppose an x distribution has mean μ = 3. Consider two corresponding x distributions, the first...
Suppose an x distribution has mean μ = 3. Consider two corresponding x distributions, the first based on samples of size n = 49 and the second based on samples of size n = 81. (a) What is the value of the mean of each of the two x distributions? For n = 49, μx = ? For n = 81, μx= ? (b) For which x distribution is P(x > 3.75) smaller? Explain your answer. a. The distribution with...
Suppose an x distribution has mean μ = 5. Consider two corresponding x distributions, the first based on samples of size...
Suppose an x distribution has mean μ = 5. Consider two corresponding x distributions, the first based on samples of size n = 49 and the second based on samples of size n = 81. (a) What is the value of the mean of each of the two x distributions? For n = 49, μ x = For n = 81, μ x = (b) For which x distribution is P( x > 6.25) smaller? Explain your answer. The distribution...
A one-sample z-test for a population mean is to be performed. True or false: The larger...
A one-sample z-test for a population mean is to be performed. True or false: The larger the P-value, the stronger the evidence against the null hypothesis?
Cholesterol levels are measured on a random sample of 1,000 persons and sample standard deviation is...
Cholesterol levels are measured on a random sample of 1,000 persons and sample standard deviation is calculated and standard error of the sample mean is also calculated. Suppose a second survey were repeated in the SAME population, but the sample size tripled to 3,000 persons. 1. The sample standard deviation of the second sample is going to be smaller than that of the first sample. A. True B. False 2. The sample mean of the second sample is going to...
1. Confidence Intervals are about the individual measurements, NOT the mean. True False 2. Means have...
1. Confidence Intervals are about the individual measurements, NOT the mean. True False 2. Means have smaller standard deviations than individuals. True or False 3. Paired t-methods are the same as one-sample t-methods applied to the pairwise differences. True or False 4. Pooled t-tests are best when the variances are unequal. True or False 5. Standard error (σ) is an estimate of the population standard deviation(s). True or False 6. The Central Limit Theorem (CLT) tells us that the mean...
true or false and why : There is a 95% chance that a mean of a...
true or false and why : There is a 95% chance that a mean of a second sample from the same population is in the range x+ - ̅1.96∙segma/(square room n) where ̅x is the first sample mean. Assume a population of mean μ and standard deviation σ and both samples have a size of n>> 30.
Question 10 (1 point) Two normal curves have the same standard deviation but one has a mean of 1 whereas the other has a mean of 4. How are the two curves related? The curves are identical. The curves have the same shape but one is shifted 4 units to the right of the other. The curves have the same shape but one is shifted 3 units to the right of the other. The curves have the same mean but...
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