Out of 300 people sampled, 45 had kids. Based on this, construct a 90% confidence interval for the true population proportion of people with kids. Give your answers as decimals, to three places ________ < p < ________

Q: f your score on your next statistics test is converted to a z​ score, which of these z scores would…

A: The given z-scores are -2, -1, 0, 1, 2.

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A: It is given that the mean and standard deviation are 50 and 10, respectively.

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Q: Claim: Most adults would erase all of their personal information online if they could. A software…

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Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: sample size(n)=502sample proportion()=0.62claim is most of adults would erase all of their personal…

Q: Instruction: Dr. Jason wants to determine the spread of the scores of his two classes in their final…

A: Given that: Class A x f 90-98 3 81-89 7 72-80 7 63-71 11 54-62…

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Q: The average score of one of your Math exams was 75 with a standard deviation of 20. Assuming the…

A: From the provided information, Mean (µ) = 75 Standard deviation (σ) = 20 X~N (75, 20)

Q: Hospital Noise Levels For a sample of 26 operating rooms taken in a hospital study, the mean noise…

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A: The sample size is 601, and sample proportion is 0.60. That is, n=601,p^=0.60. The population…

Q: FIND THE P VALUE GIVEN THIS DATA   The total time (in minutes) a subject spent on the Trail…

A: Given, n1 = 41            n2 = 49x1 = 104.23      x2 = 62.24 s1 = 45.45        s1 = 16.34Level of…

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A: Let "X" be the IQ score of the adults.

Q: 55 randomly selected students were asked the number of pairs of shoes they have. Let X represent the…

A: We have given that,  X(pairs of shoes)  f (frequency)  4 3 5 8 6 5 7 6 8 2 9 3 10…

Q: Q2 (a) Solve the mean, variance and standard deviation of the following data: 1.5 0.2 C 0.2 3.3 1.2…

A: The data set are :-X :- 0.2, 3.3, 1.2, 5.7, 1.5, 0.2, 1.8

Q: A poll taken this year asked 1023 adults whether they were fans of a particular sport and 66% said…

A: As per the our company  guideline expert have to answer first three subpart only.Given information:

Q: In 2001, the polls found that 81% of American adults believed that there was a conspiracy in the…

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Q: When 20 people were asked to donate for charity, they donated the following amounts. [36, 46, 47,…

A: The data shows the donation amount of 20 people.

Q: B. Find the Expected Frequencies (E) based on the franchisor's reported relative frequencies. This…

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Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: Given information Mean = 100 Standard deviation = 15 P(X &gt; x) = 0.65 P(X &lt; x) = 1 – 0.65 =…

Q: What is the of the mean 0. P(X=x) 0.15 0.20 0.15 0.50 3.

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Q: iven the exam scores of selected students in MMW; 30, 22, 27, 27, 29, 27, 27, 22, 28, 21, 21, 20,…

A: We have given that data  30, 22, 27, 27, 29, 27, 27, 22, 28, 21, 21, 20, 17, 21, 33 Mean = sum of…

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than…

A: Claim: the proportion of adults who smoked a cigarette in the past week is less than…

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A: here given discrete probability distribution of x

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A: We have given that,  The students quiz are normally distributed with mean(mu) = 24 and standard…

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Q: A certain statistics instructor participates in triathlons. The accompanying table lists times (in…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: 1. A class had a quiz in Statistics. The scores of the students has a mean of 87 and standard…

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Q: which valves have a 2-score less than 2.5

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Q: According to Chebyshev's theorem, how many standard deviations from the range would include at least…

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Q: ends enroll in the same math course at the university they are attending.  On the first exam Sam…

A: Given: Sam scores 35 (the mean in this class is 34 with a standard deviation of 15).   Thus,…

Q: Listed in the data table are IQ scores for a random sample of subjects with médium lead levels in…

A: The IQ scores are Medium lead level High lead level 72 n2=11 x2=91.088 s2=10.092 97 92…

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Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

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Q: The variability of the scores in a sample tends to be _____ the variability of the scores in the…

A: As, we know that larger the size of population,  larger the variability in the population,  if we…

Q: A study conducted by Hershey's discovered that Americans consumed an average of 11.4 pounds of…

A: Given: averageμ=11.4standard deviation(σ)=3.6 x follows normal distribution.

Q: For each problem, write which test you used in your calculator, draw the graph, calculate pvalue,…

A: Given information Hypothesized mean = 265 n = 41 Sample mean = 250 Standard Deviation = 55 Null…

Q: A woman is told that her weight has a standard score (z-score) of – 1.5. This means that: her weight…

A: Z-Score: It is a dimensionless quantity that is used to indicate the signed, fractional, number of…

Q: Consider the following competing hypotheses: (You may find it useful to reference the appropriate…

A: Solution: Given information: n= 22 sample size  d =5.7 difference of sample mean sd= 6.9 Difference…

Q: Which of the following statements are true? |. In a data-set that is symmetric, the mean is…

A: Type of skewness:  Symmetric: If the distribution is said to be symmetric if the shape of the…

Q: Assignment 2 Answer the following using the 4-step solution, then please send as an attachment. 1.…

A: