Consider the normal curve in the figure to the right which ustrates the relative frequencies in a distribution of systolc biood pressures for a sample of female students The destribution has a standard devation of 15 60 75 00 105 120 135 150 Blood pressure a. What is the mean of the destribution? Choose the correct answer below OA 105 OB 90 OC 95 OD 115 b. Estimate the percentage of students whose blood pressure is less than 90 Choose the correct answer below A 84% OB 100% O c. 47% OD. 16% CEstmate the percentage of students whose blood pressure is between 100 and 120, Choose the correct answer below OA 100% OR 84% OC 47% OD. 16% d. Estimate the percentage of students whose blood pressure is greater than 120. Choose the correct answer below. OA 16% OB 47% OC 100% OP 84%

Q: So, I'm doing an assignment that's due tomorrow for my Statistics II class. In this one portion, we ...

A: Steps to conduct hypothesis test using population proportion:Step1:Suppose a population has true pro...

Q: A boxplot for a set of 40 scores is given below. How many scores are represented in the blue section...

A: The definition of Boxplot was stated below:Boxplot:The statistical data is representing in simple wa...

Q: What is the probability that thanksgiving falls on a thursday?

A: Thanksgiving day:It is known that Thanksgiving is always celebrated on fourth Thursday of November e...

Q: You want to obtain a sample to estimate a population proportion. Based on population proportion is a...

A: The formula for the sample size is as follows:

Q: Find P (A or B or C) for the given probabilities.  P(A)=0.36, P(B)=0.22, P(C)=0.17 P(A and B)=0.11, ...

A: Concept of General Addition Rule:For any three events A, B and C the General Addition Rule state tha...

Q: Part 1 and 2

A: 1)Given DataY= 1+X+uu = v + XE(v) = 0Var(v) = 1E(X) =1Var(x) =21)E(u|X = 1)E(u|X = 1) = E(v+X| X=1) ...

Q: A basketball player has a free throw percentage of 93%. What is the probability she misses at least ...

A: The probability of she misses at least one of his next 27 free throws is obtained below:Let X be the...

Q: e Home Page Chamberlain Univer... 1.25Personal Computer... Free ethical and leg... Use the normal di...

A: The probability that a component is at least 12 centimeters long is 0.7486 and it is obtained below:...

Q: Hello, What is the difference between a correlation coefficient and the coefficient of determination...

A: Correlation:Correlation a measure which indicates the “go-togetherness” of two data sets. It can be ...

Q: 2. Let Y denote the average starting salary for 2014 U.S. college graduates, measured in dollars. Su...

A:

Q: Select all of the following that are true for CLT: A) The sampling distribution gets narrower and m...

A: Central Limit Theorem for mean:If a random sample of size n is taken from any population having mean...

Q: From a group of 18 customers, 4 are to be chosen to receive a special gift. Assuming that the order ...

A: The number of groups of 4 customers can be chosen is,

Q: Problem 2. Suppose A and B take turns tossing a biased coin which lands heads with probability p. Su...

A: Hi! Thank you for posting the question. Since your question has more than three sub-parts, we have s...

Q: Which of the following statements about confidence intervals is INCORRECT?       If the confid...

A: Reason for correct statement:If the confidence interval for H0: mu=0 contains 0, it is concluded the...

Q: Jolyn scores an average of 28 points per basketball game, and her points per basketball game are nor...

A: The standard deviation is,

Q: According to a national​ study, 32​% of taxpayers used computer software to do their taxes for a cer...

A: From the given information, 32​% of taxpayers used computer software to do their taxes for a certain...

Q: A company wants to evaluate its attrition rate, in other words, how long new hires stay with the com...

A: Conditions for a discrete probability distribution:Probability value of an event should be non-negat...

Q: 6.2 Dental Insurance You plan to purchase dental insurance TRY for your three remaining years in sch...

A: a.Random variable:A random variable, usually denoted as X, is a variable whose possible values are n...

Q: Cherise is interested in how her friends compare to the population for number of hours of television...

A: The test statistic is,

Q: The average THC content of marijuana sold on the street is 9.3%. Suppose the THC content is normally...

A: a.Find the distribution of X:Consider the variable THC content of marijuana sold on the street be de...

Q: According to the ACT Profile Report-National, the ACT composite scores are normally distributed with...

A: The provided sample mean is x̄  = 19.8 and the known population standard deviation is σ = 5.4,and th...

Q: Over 500 million tweets are sent per day (Digital Marketing Ramblings website, December 15, 2014). A...

A: Hey, since multiple sub parts are posted, we will answer first three subparts according to our polic...

Q: Please give step by step in TI 84

A: Consider X to be the random variable, defined as transformed ratio of the return rates that follows ...

Q: Define binomial distribution with an example.

A: Binomial distribution is one of the important study in probability distributions. In binomial distri...

Q: Suppose a simple random sample of size n 64 is obtained from a population with u 71 and a 16 (a) Des...

A: (a)The sampling distribution of x-bar follows normal with mean µ and the standard deviation is σ/ √n...

Q: I'm lost on question b. for a I got the cdf was 0 for x < 2 2(x+(1/(x-1))-3) for 2  <= x <=...

A: The (100p)th percentile is denoted as η(p) and defined as follows:

Q: On a particular night, a baseball stadium sells 60% of its seats, and of those, 15% do not end up sh...

A: According to the provided data, 60% of the seats are booked and 15% of these do not end up showing, ...

Q: The principle of redundancy is used when system reliability is improved through redundant or backup ...

A: From the given information, A region's government requires that commercial aircraft used for flying ...

Q: The question is which box plot has the greatest variability and which box plot has the least variabi...

A: Basics of a boxplot:A boxplot is based on the 5-number summary: (Minimum, Q1, Median, Q3, Maximum); ...

Q: In psychology, what are two factors that decrease statistical power?

A: Factors that affect power are There are 3 factors that affect power are :-• Sample size (n) : - Grea...

Q: The round off errors when measuring the distance that a long jumper has jumped is uniformly distribu...

A: It is provided that the round off errors when measuring the distance that a long jumper jumped is un...

Q: Five peas are generated from parents having the green/yellow pair of genes, so there is a 0.75 proba...

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

Q: The average THC content of marijuana sold on the street is 9.3%. Suppose the THC content is normally...

A: (a)The distribution of X is,Here, X denote the THC content for a randomly selected bag of marijuana ...

Q: For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class...

A: It is given that the mean and standard deviation are 12 and 3.4, respectively. The sample size n is ...

Q: The total cholesterol levels for women aged 20 to 30 years are normally distributed with µ=190 mg/dl...

A: The sample size is 25 that is reasonably large. Therefore, z-test can be used here. Let µ be the tru...

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support...

A: Sample size:The minimum sample size for a desired confidence level, α with a given margin of error, ...

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: 31. You Explain It! Cell Phone Rates Monthly charges for cell phone plans in the United States are n...

A: Given DataMean = $62Standard deviation = $18a)The normal distribution table with mean 62 and standar...

Q: How are your grades? In a recent semester at a local university, 600 students enrolled in both Stati...

A: It is given that the total number of students enrolled in both statistics I and psychology I is 600....

Q: nment: Applications X X + ses/48615/assignments/15888927module item id-6411020 eol G urse Home Page ...

A: The probability that a randomly selected bag of green will weigh less than 26 kilograms is 0.0099 an...

Q: How many computers? In as simple random sample of 150 households, the sample mean number of personal...

A: The provided information are:

Q: At a local community college, five statistics classes are randomly selected out of 20 and all of the...

A: In the given situation, we need to identify which sampling method is used.

Q: store gathers some demographic information from their customers. The following chart summarizes the ...

A: The probability that the customer is at least 20 but no older than 50 is 0.4303 and it is obtained b...

Q: A random number generator picks a number from 3 to 46 in a uniform manner. Round answers to 4 decima...

A: Hello! As you have posted 5 sub parts, we are answering the first 3 sub-parts.  In case you require ...

Q: question 1-4

A: A standard normal distribution is normally distributed with mean µ = 0 and standard deviation σ = 11...

Q: question e.

A: (e)Here, P (|Z|≤ 1.5) is required to be calculated using the standard normal table.P (|Z|≤ 1.5) coul...

Q: 6. A researcher develops a test for identifying intellectually gifted children. It has au= 56 and o=...

A: Area under the normal curve is the sum of all probabilities of variable X. Since probability ranges ...

Q: A population if IQ scores form a normal distribution with a mean of mew=95  and a standard deviation...

A: c)The probability of obtaining sample mean greater than 97 for sample size, n=9 and population mean,...

Q: A basketball player has a free throw percentage of 93%. What is the probability she misses at least ...

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

Q: You buy a lottery ticket to a lottery that costs $10 per ticket. There are only 100 tickets availabl...

A: Expected value:The expected value of a random variable is the sum of the possible values that the ra...