1. During the COVID-19 Pandemic, while school-aged children were attending classes online, 70% of parents f overwhelmed. It is believed this percent has decreased. A simple random sample of 500 parents was surveyed said they felt overwhelmed. Is this enough evidence to conclude that the percentage of parents who feel overwhelmed has decreased from the Pandemic/Stay at Home Era? a. State the Ho and the Ha b. Calculate the test statistic and the p-value c. Reject or fail to reject Ho

Q: a. P(x2 12.5) b. P(x≤7) c. P(11.54 sxs 16.24) d. P(6.22 ≤x≤ 14.12) Click here to view a table of…

A: Population mean μ =11 Population standard deviation =2 NOTE:- According to bartleby guidelines…

Q: This answer is wrong

A: n= 1032 Sample size x= 549 successes

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A: Sample size n =14 Standard deviation =12.7

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A: When a statistician talks about getting a "best fit" least squares regression line, they are…

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A: Answer: From the given data P(-1.6 &lt; Z &lt; -0.67) is,

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A: Obtain the 99% confidence interval for the estimate of the population standard deviation.   The 99%…

Q: If n = 230 and (p - hat )= 0.35, find the margin of error at a 98% confidence level

A: The question is about margin of erro Given : Sample size ( n ) = 230 Sample prop. ( p^ ) = 0.35…

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A: We have to find

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A: Hypothesis tests are used to study the larger population by comparing the sample taken from that…

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A: From the provided information, Sample size (n) = 30 Sample mean (x̄) = 25 Sample standard deviation…

Q: A and B are mutually exclusive events with P(A) = 0.47, P(B) = 0.36 Find P(A and B) abd P(A Or…

A: Answer: From the given data, A and B are mutually exclusive events P(A) = 0.47 P(B) = 0.36

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A: X=485, n=2027, level of significance ɑ=0.05 ,p=25%

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A: Given the following information: Ordering cost per order = $35 Cost of one brake set = $125…

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A: From the provided information,   Sample 1 Sample 2 Sample size 37 37 Mean 0.79185 0.81598…

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A: Month Observed Frequency, Oi January 98 February 103 March 114 April 92 May 106 June 106…

Q: ifn=515 and (p hat) = 0.72, find the margin of error at a 90% confidence level

A: From the provided information, n = 515 and p̂ = 0.72 Confidence level = 90%

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A: To find 25V, we need to first calculate the probability of surviving from age 45 to age 25+t for…

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A: Number of white ball in box = 3  Number of black ball in box = 4  Number of red ball in the box =2…

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A: Sample size(n)=40 sample mean(x¯)=$54.89 Population standard deviation(σ)=7.61 and α=0.01

Q: Compute the test statistic. Round to two decimal places.

A: Sample size, n=2027 No. of adults who drank diet soda, x=485

Q: Sent dy Temperature 8 AM (C) dy Temperature 4 PM (C) erence A 46.22 46.67 -0.45 A. 1.112 B. 1.580 C.…

A:

Q: A Gallup poll of 195,600 employees shows that 51% of them were actively searching for new jobs. Use…

A: n=195600, p^=51%, level of significance ɑ=0.01

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A: The CI gives the range of values in which the pop. parameter lies with certain confidence.

Q: Question list e Summary Statistics Background μ n X S 0.51 H₁ 33 4.47 H₂ 40 3.74 0.81 Blue Red Print…

A: Background μ n x¯ s Blue μ1 33 4.47 0.51 Red μ2 40 3.74 0.81

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A: α=0.05

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A:

Q: (a) State the null and alternative hypotheses for testing Matt's claim, (Type the symbol "p" for the…

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A: Sample size n=1000 Number of successes x=940  zcrit value for 0.95 confidence level is 1.960

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A: AS PER POLICY I HAVE CALCULATED 3 SUBPARTS plz REPOST for remaining  mean = 15  standard deviation…

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A: Sample size, n=20   Sample standard deviation, s = 43.9

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A: The random variable X is the set of final examination grades in an introductory statistics course It…

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