1 pts Z follows a standard normal distribution. What outcome, z (z-value), has a lower tail probability of 0.35?
1 pts Z follows a standard normal distribution. What outcome, z (z-value), has a lower tail...
Z follows a standard normal distribution, What is the probability of getting P ( Z > 0.15 ) ? Enter your answer to 4 decimal places
1) Given a standard normal distribution, find the probability of having a z score higher than 1.67 ```{r} ``` 2) Given that test scores for a class are normally distributed with a mean of 80 and variance 36, find the probability that a test score is lower than a 45. ```{r} ``` 3) Given a standard normal distribution, find the Z score associated with a probability of .888 ```{r} ``` 4) Find the Z score associated with the 33rd quantile...
probability Q7 (4 marks) a) Creat a standard normal probability distribution plot for z-value for the range of (-3, 3) with increament of 0.5. b) Find the z value (to two decimal places) that cuts off an area in the upper tail section of the standard normal curve with probability of: 0.45 1) 0.0252) 0.053 ) 0.0054) 0.01 A) Answer Z-score probability -3 0.004431848 -2.5 0.0175283 -2 0.053990967 -1.5 0.129517596 -1 0.241970725 -0.5 0.352065327 0 0.39894228 0.5 0.352065327 1 0.241970725...
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Find the value of Z for the standard normal distribution such that the area a) in the left tail is 0.1000 b) between 0 and Z is 0.2291 and Z is positive c) in the right tail is 0.0500 d) between 0 and Z is 0.3571 and Z is negative 1) 2) Find the following binomial probabilities using the normal approximation a) n- 70, p-0.30, P(x-18) b) n-200, p 0.70, P(133 x S 145) c)...
What is the critical value of Z for a distribution with the proportion in the tail of .1151? Assume a one-tailed test. a.2.2 b.1.8 c..2 d.1.2 What is the critical value of Z for a distribution with the proportion in the body of .8389? Assume a one-tailed test. a.0.99 b .5 c.1.99 d.1 What is the critical value of Z for a distribution with the proportion in the tail of .3121? Assume a one-tailed test. a.49 b. .48 c 2.48...
1. (5 points) Suppose Z is a random variable that follows the standard normal distribution. a) Find P(Z > 0.45). b) Find P(0.7 SZ 1.6). c) Find 20.09. d) Find the Z-score for having area 0.18 to its left under the standard normal curve. e) Find the value of z such that P(-2SZS2) -0.5.
find rhe area in the left tail more extreme than z=-177 in a normal standard distribution. Round your answer to three decimal places
Chapter 5, Section 1, Exercise 013 Find the p-value based on a standard normal distribution for each of the following standardized test statistics (a) Z = 0.89 for a right tail test for a difference in two proportions Round your answer to two decimal places p-value0.20 the absolute tolerance is +/-0.01 (b) Z-_2.39 for a left tail test for a difference in two means Round your answer to three decimal places. p-value- the absolute tolerance is +/-0.001 (c) = 2.18...
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Assume a random variable Z has a standard normal distribution (mean 0 and standard deviation 1). Use all decimal places from the Normal Table. Your final answers to 4 decimal places. a) The probability that Z lies between 1.55 and 1.86 is Select b) What is the value of Z if only 1.5% of all possible Z values are larger? Select]
Question 8 1 pts The scores on Quiz 2 follows the normal distribution with a mean of 8 and a standard deviation of 0.5. What is the probability that a randomly selected student has a score below 5? O 0.000000000987 O 0.00001 O 0.000000021 There is something wrong with the question.