A newspaper survey found that 65% of readers found online tutorials useful. If a random sample of 9 readers is selected, compute the  standard deviation of the probability distribution.

Q: The mean and standard deviation of a binomial probability distribution with n=25 and p = 0.20 are

A: p = 0.2 n = 25

Q: In a study of births in 2007, it was found that 51% were male and 49% were female. If 100 people are…

A: Given that there are 51% are male and 49% are female & if 100 people selected randomly we have…

Q: The following table shows the probability of a cellular phone company. What is the standard…

A: Solution

Q: What is the correlation p between X and Y for the joint probability table?

A:

Q: Is the following a Probability Distribution?

A: Random variables are of two types, discrete and continuous. A discrete random variable can only take…

Q: The following table shows the probability of a cellular phone company. What is the standard…

A:

Q: In a negatively skewed distribution of scores, what is the probability of sampling a z-score less…

A: We have to find the probability that In a negative skewed distribution , z-score is less than 1 .…

Q: A pharmaceutical company claims that 20% of those taking its new allergy medication will experience…

A: Of the people who take the new allergy medication of the company, p = 20% will experience…

Q: Find the variance of the probability distribution for the histogram shown.

A: From the given histogram we can create the probability distribution table. Xi probability, p(x)…

Q: Does the following table represent a legitimate probability distribution?

A: The values of X are discrete, they are possible values of X.  Then we check the total probability.…

Q: Suppose the random variable X has the following probability distribution:

A: Question 2) We have given that X has a random variable, taking the values 1,3,5,9 and corresponding…

Q: Find the probability that in 200 tosses of a fair die, we will obtain at most 30 fives. Use the…

A: this is binomial distribution mean of binomial distribution = np variance of binomial distribution =…

Q: Bill contends that people spend between 0 and 80 minutes each day listening to music, and he insists…

A: Given: Hadey states that it doesn't make sense in believing that goats are likely to spend more…

Q: Based on a​ poll, among adults who regret getting​ tattoos, ​17% say that they were too young when…

A:

Q: Find the standard deviation o of the random variable X given the probability distribution

A: Steps to find the standard deviation δ for given probability distribution - Step 1. Find x.P(x)Step…

Q: At a cell phone assembly plant, 82% of the cell phone keypads pass inspection. A random sample of…

A:

Q: In a binomial distribution, p, the probability of getting a successful outcome on any single trial,…

A: One of the properties of binomial distribution is that the probability of success must remain same…

Q: Use your Ti-84 to find the mean and standard deviation of the discrete probability distribution…

A: Use Ti-84 to find the mean and standard deviation of the distribution. 1.Open the calculator 2.…

Q: Should the one-tailed or the two-tailed probability be used to assess performance  of the students?

A: The tail of the test depends on the alternative hypothesis of the test. The possible alternative…

Q: In a given one of Mendel's hybrid experiments, the probability of offspring peas having a green pod…

A: Here, probability of offspring peas having a green pod is 3/4 or .75. Hence, p = 0.75. Number of…

Q: Given that X is a normally distributed random variable with a mean of 50 and a standard deviation of…

A: Given that X is a normally distributed random variable with a mean of 50 and a standard deviation of…

Q: Create the probability distribution for the random variable G that refers to the number of gadgets…

A: The number of values corresponding to a class or observation is defined as the frequency of that…

Q: What is the probability of selecting a score greater than 50 from

A: Given μ= 55 and a σ=5.

Q: Need help with this one please.

A: Given that ; Mean = 7.2 inches S. D. = 1.3 inches P[ x<   1.3]     =  ?????  By using standard…

Q: When three coins are tossed once, the probability distribution for the random variable X…

A:

Q: A Statistics show that on an average weekend night, 1 out of every 10 drivers on the road is drunk.…

A: Given data, n=400 p=110q=1-p=910 P(25<X<38)=?

Q: Waleed decided to construct a probability distribution of tossing five coins. Construct a…

A: Construct a probability distribution table for the given experiment using the binomial experiment.…

Q: According to Chebychev's theorem, the probability that the random variable Y differ from the mean u…

A: The provided information is:

Q: The number of adults living in homes on a randomly selected city block is described by the following…

A: Formula Used: Standard deviation σ = SD(x) =  Var(x) Where, Var(x) = variance of x Var(x) =…

Q: ally distributed with a mean of 12 e probability that a randomly selec ces?

A: Hi! Thank you for the question, as per the honor code, we are allowed to answer three sub-parts at a…

Q: Is the following a valid probability distribution?"

A: The conditions of the probability distribution are: The sum of probability distribution should be…

Q: A. COMPUTE THE MEAN, VARIANCE, STANDARD DEVIATION OF THE PROBABILITY DISTRIBUTION THEN ANSWER THE…

A: Given: X 0 1 2 3 P(X) p0 p1 p2 p3 1) Mean: EX=∑i=1nxipi EX=0×p0+1×p1+2×p2+3×p3…

Q: Weight and Overweight. The data is summarized in the following table. If one of the hundred aults…

A: Given Data:

Q: When marketing a new product, a company conducts a taste survey. A recent survey of 399 respondents…

A: Binomial Distribution: Let X be a discrete random variable of marketing a new product is said to…

Q: In the textile industry, a manufacturer is interested in the number of blemishes or flaws Occurring…

A: In this scenario, one needs to apply the probability distribution for the given situation.

Q: A state insurance commission estimates that 13% of all motorists in its state are uninsured. Suppose…

A:

Q: FIND THE STANDARD DEVIATION The number of items sold per day at a retail store, with its…

A: We have the probability distribution

Q: A police department reports that the probabilities that 0,1,2, and 3 burglaries will be reported in…

A:

Q: What is the probability of it raining, P(B), if it has started snowing? Report P(B), given that it…

A: From the given information, There is a 60% chance of snow. That is, P(A)=0.60 There is a chance of…

Q: According to a Wall Street Journal article, 80% of all U.S. households have a laptop or destock…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: Assume a binomial probability distribution has p = .60 and n = 200.a. what are the mean and standard…

A: Given: Number of trials (n) = 200 Probability of success (p) = 0.60

Q: Assume you have a binomial distribution. In an experiment with 100 trials and a probability of a…

A:

Q: Determine whether the given procedure results in a binomial distribution.    Tossing a coin 12…

A: Given data :  Total number of coin toss , n = 12

Q: What is the probability of selecting a score greater than 50 from a positively skewed distribution…

A: The given values are, Since the distribution of X is not a bell shaped distribution , and we use…

Q: Of all the students, 44% own an iPhone, with a standard deviation of .03   For that same sample of…

A: Given that of all the students, 44% own an iPhone. This means the mean=0.44 Standard deviation=0.03…

Q: the probabilities that a batch of 4 computers will contain 0,1,2,3, and 4 defective computers are…

A:

Q: Determine the standard deviation of the random variable, B(600,0.4).

A: Here we need to find the standard deviation of the given binomial random variable.

Q: Still in the same context, aproximate the probability of having at most 26 jurors using the normal…

A: Here, n = 40 and p = 0.80.

Q: Based on a​ poll, among adults who regret getting​ tattoos, 23% say that they were too young when…

A: Given,n=10p=0.23Let X=no.of adults to get tattoosX~Binomial(n=10  ,  p=0.23)P(X=x)=10x…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.