7% of US adults have blood type O-negative. Suppose we take a random sample of 50 US adults. LetX represent the number of adults (out of the sample of 50) with blood type O-negative. Thissituation can be modeled with a binomial random variable X.Calculate the standard deviation of X. In the space below, provide your answer and round to three decimalplaces. X is a discrete random variable that represents the number of student emails that a professorreceives in any given day. The probability distribution for X is summarized in the table below:P (X = x).0351.135.2653.3154.250Calculate the mean of X. In the space below, provide a numeric value rounded to two decimal places.

Note: Please repost 2nd question as i can author only 1 question as per my policy. Given…

Answered: 7% of US adults have blood type…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find Upper P 20, the 20 th percentile. This is the bone density score separating the bottom 20 % from the top 80 %. a. The bone density score corresponding to Upper P 20 is (Round to two decimal places as needed.)
Use the formula to find the standard error of the distribution of differences in sample means x̅ 1-x̅2. Samples of size 120 from population 1 with mean 91 and standard deviation 13 and sample size 90 from population 2 with mean 79 and standard deviation 18. ROUND YOUR ANSWER FOR THE STANDARD ERROR TO TWO DECIMAL PLACES. STANDARD ERROR = ?
Assume that the probability of a being born with Genetic Condition B is p = 7/12. A study looks at a random sample of 607 volunteers. Find the most likely number of the 607 volunteers to have Genetic Condition B. (Round answer to one decimal place.) Let X represent the number of volunteers (out of 607) who have Genetic Condition B. Find the standard deviation for the probability distribution of X. (Round answer to two decimal places.) Use the range rule of thumb to find the minimum usual value µ-20 and the maximum usual value p+2o. Enter answer as an interval using square-brackets only with whole numbers. usual values = Question Help: E Written Example Message instructor Submit Question Jump to Answer DELL -> C @ #3 % %24
Suppose we are given a sample of 60 observations from a distribution whose mean is 0 and variance is 3/5 Find approximately the probability that the sample mean lies in the interval (-0.05,0.05). Options: 0.000625 0.383 0.6915 1
Hope to answer this accordingly.
Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a standard deviation o = 15. Find the probability that a randomly selected adult has an IQ between 84 and 116. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 84 and 116 is (Type an integer or decimal rounded to four decimal places as needed.)
Test scores for a Statistics class have a mean of 81 with a standard deviation of 4. Test scores for a calculus class had a mean of 75 with a standard deviation of 3.5. Suppose a student gets an 87 on the statistics test andan 86 on the calculus test. Calculate the z-scores for each test. On which test did the student perform better relative to the other students in the class.
A sample has a mean of M=60 and a standard deviation of s=7. For this sample, find the z-score for each of the following X values. x=69 x=54 x-72 x=49 x=63 x=52
Assume that adults have IQ scores that are normally distributed with a mean of 96.1 and a standard deviation of 18.1. Find the probability that a randomly selected adult has an IQ greater than 129.0. The probability that a randomly selected adult from this group has an IQ greater thanb 129.0 is (Round to four decimal places as needed.)
Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested. Find P33, the 33-percentile. This is the temperature reading separating the bottom 33% from the top 67%. P33 = %3D
A single toss of a fair coin results in either 0 or 1 head, each with probability 1/2. Define H = number of headsobtained on a single toss. The mean of H is µH= 0.5 and the standard deviation of H is σ H= 0.5 . Suppose youtoss a fair coin four times. Define T = total number of heads obtained. Find the mean and standard deviation ofT.
Trucks in a delivery fleet travel a mean of 100 miles per day with a standard deviation of 38 miles per day. The mileage per day is distributed normally. Find the probability that a truck drives at least 141 miles in a day. Round your answer to four decimal places.

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