Do the histogram

Q: find the z-score that the area under the standard normal curve to the left is 0.52

A: We have given that,  the area under the standard normal curve to the left is 0.52  Then,  We will fi...

Q: A B Math Grade English Grade 86 80 90 88 78 85 88 87 89 90 90 94 91 93 77 80 85 80 78 80

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Q: From among the 36 students in a class, one president, one vice-president and secretary are to be ele...

A: Given that   

Q: what causes the rejection of null hypothesis? what is the significance level?

A: The p - value less than 0.05(5%)

Q: The average length of time for students to register for classes at a certain college has been 40 min...

A: The random variable length of time follows normal distribution. We have to test whether the average ...

Q: Question 2 What sampling technique will be applicable for a very small sample size comin limited pop...

A: Here, we know that in the convenience sampling technic is also known as accidental sampling. In this...

Q: Find the rejection region for each hypothesis test based on the information given (make a graph and ...

A: Followings are the Explaination of the question  Use the t-distribution and find the critical region...

Q: In a clinical trial, 3% of the patients in the study experienced fatigue as a side effect. Suppose t...

A: Given that  n=20 , p=3%=0.03 , q=1-p=1-0.03=0.97 X~Binomial(n=20 , p=0.03) X=Number of the patients ...

Q: 2. The heights of a random sample of 50 Senior High School students showed a mean of 174.5 centimete...

A: Given that x̄ =174.5 , S=6.9 , n = 50

Q: The variable rdintens is expenditures on research and development (R&D) as a percentage of sales. Sa...

A: a) The estimated equation is as follows: If the sales are increases by 10%, then expenditure on res...

Q: A population of the values 2, 4, and 7. List down all the possible samples of size 2 which can be dr...

A: Here, 2,4,7 are the population and we will make samples of size 2.

Q: The amount of calories consumed by customers at Little Buffalos buffet is normally distributed with ...

A: Given that  X~N(μ= 2885 , σ= 651 ) μ= 2885 , σ= 651 , n = 47

Q: Determine whether the events are mutually exclusive or not mutually exclusive then find the probabil...

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Q: Weights of Elephants A sample of 9 adult elephants had an average weight of 11,774 pounds. The stand...

A: For the given data Find the 90% confidence interval of the population mean for the weights of adult ...

Q: A normal population has mean u = 55 and standard deviation o = 9. What is the 84th percentile of the...

A: Given that mean u = 55 and standard deviation o = 9.

Q: fine the p value when the statistics is 6.78 the df is 10-1 and the level of significance is 0.05, o...

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Q: A binary communication channel transmits a sequence of "bits" (0s and 1s). Suppose that for any part...

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Q: (b) Find the sample size needed so that a 99.8% confidence interval will have a margin of error of 4...

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Q: -1 4 5 6 8 10 There is a very popular lottery in which a ticket is called a scratcher. In this lotte...

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Q: iven the pdf of X GEOM(p) S(1 – p)²-'p, f(x) = | 0, if r = 1,2,3, ..., 0 otherwise

A: Solution

Q: List all of the possible sample of size of 2. Compute the mean of each sample Identify the probabili...

A: HERE AS PER GUIDELINES I HAVE CALCULATED 3 SUBPARTS here given population, {2,4,7} sample of size n ...

Q: The binomial distribution applies equally well to discrete and continuous varia a. False O b. True O...

A: Here we have to check whether the given statement is true or false regarding the binomial distributi...

Q: Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval...

A: Given that  n=291 , X=82 Formula for confidence interval  C.I=(p  ± Zc √(p(1 - p)/n))

Q: Consider the following information: Rate of Return If State Occurs Probability of State of Economy S...

A: Expected value explains the average of the data set. It is also known as mean. It is calculated by t...

Q: A published report claims that 35% of college students have used an online dating site or app.  Beli...

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Q: Venn diagram

A: Given

Q: Let X and Y be two discret_e rando_m v_ari_ables wi_th the jo_int prob ma_ss function Find E(2Y...

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Q: The weight of 2,000 students are normally distributed with the mean of 46kg and standard deviation o...

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Q: (c) If the confidence levels were 98% rather than 80%, would the margin of error be larger or smalle...

A: Given Sample size, n=175 Sample mean, x¯=2.94Population sd,σ=0.45

Q: i normal adults. Find the sample size necessary to estim stics students such that it can be said wit...

A: Standard deviation is 18 for the population normal adults, σ=18 Margin of Error=E=7 At 90% confidenc...

Q: For biased coins, the probability of getting 5 heads out of a toss of 5 coins equals the probability...

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Q: A certain stimulus administere ulted in the following increase/

A: By applying an one sample 't' test, sample size (n) = 12 sample mean (x̄) = Σx/n = 31/12 = 2.58  sa...

Q: 1,3,5,7,9   Find:  a. range b. mean and MAD c. variance d. standard deviation

A: For a set of observations, range is the difference between maximum and minimum value. For a set of n...

Q: How many females are in your sample? How many males? What proportion of your sample is female? What ...

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only fi...

Q: Show that for every decreasing sequence of events, {E,,n2 1}, lim P(E,)= P(lim E,)

A: Here, for every decreasing sequence of events We have to prove, En, n≥1, limn→∞PEn=Plimn→∞En  

Q: It has been known that a fixed dose of a certain drug causes an average increase of pulse rate of at...

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Q: Big babies: The National Health Statistics Reports described a study in which a sample of 335 one-ye...

A: Here is given that, mean is 25.2 and standard deviation is 5.3, number of sample is 335. We will use...

Q: can you build a research plan covering sample design and state hypothesis knowledge of medical stude...

A: Given information: It is required to build a research plan covering sample design and hypothesis.

Q: Select the item that would be considered a placebo.

A: # What is a placebo and why is it used  Placebo is used in clinical trials to test the effectiveness...

Q: Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a st...

A: GivenMean(μ)=170standard devaition(σ)=5No.of people(N)=80

Q: A normal distribution has a population mean of u=75 and a standard deviation of o=D9. What is the P(...

A: Given that  X~N(μ= 75 , σ= 9 ) μ= 75 , σ= 9

Q: Undergraduate GPAs It is desired to estimate the mean GPA of each undergraduate class at a large uni...

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Q: Sarah decides to create a boxplot for each set of golf balls, as displayed in Figure 2. 270 275 280 ...

A: Boxplot : A box and whisker plot, often known as a box plot, shows a five-number summary of a collec...

Q: (a) Find the mean of p, where p is the proportion of people in the sample who experience withdrawal ...

A: Let p be the proportion of people who experience withdrawal symptoms. Given that p = 0.02 and sample...

Q: Determine the area more than z=-1.03 0.8486 O 0.8485 O 0.1515 O 0.1516 Determine the area below z=-0...

A: The objective is to define the area (in terms of proportion) below or above the given z-scores.

Q: Consider a Bernoulli Experiment with 7 trials. If the expected number of “successful” trials is 4, w...

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Q: 1. Which of the following would be an appropriate null hypothesis? A. The mean of a population is eq...

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Q: Suppose that a biased coin is tossed 50 times. In each flip, the probability of getting head is 3/8....

A: Let X be the random variable from binomial distribution with probability of getting head  (p)= 3/8 a...

Q: The sugar content of the syrup in canned peaches is normally distributed, and the variance is though...

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Q: = 1 = 3 4 6 10 The Plush Zoo store sells stuffed animals. The store is running a special on teddy be...

A: Population proportion = p= X/N = 20/78  P= 0.26   .     Sample proportion ( p^) = X/n = 6/31 = 0.19