5) If all other factors remain the same, the researcher in the previous question (Q1-(4)) calculated a 90% confidence interval instead of 95% confidence interval (15, 21), which of the following CIs is possible to be correct a) (14, 20) b) (14, 22) c) (16, 20) d) (16, 22) I.

Q: 6. A clinical trial was conducted to determinc if a certain type of inoculation has an cffect on the…

A: Given

Q: 1000 health practitioners in Zambia were surveyed during the COVID-19 outbreak, of these 380 of them…

A: We have given that,  Sample size (n) = 1000 and favorable cases (X) = 380 Then,  We will find margin…

Q: In Good Cholesterol Bad Cholesterol by Roth and Streicher , data from eight fast food restaurants…

A:

Q: A sample is used to obtain a 94% confidence interval for the mean of a population as (70, 74). If…

A: Decision Rule: If the hypothesized value lies outside the confidence interval, then reject the null…

Q: A sample of n = 9 scores is selected from a population with an unknown mean (u). The sample has a…

A:

Q: If Hugo and Lily use a 99% confidence level (z*score of 2.58), which statement is true? Hugo polled…

A:

Q: A graduate Statistic Student wants to estimate the true proportion of county college ( "c.c.")…

A: we have given that  sample size N=100 ,favorable cases X=64 sample proportion P^=X/N

Q: 2. Suppose that the sample mean temperature of 31 hot air balloons (in flight) is 97° Celsius with a…

A:

Q: Construct both a 95% and a 98% confidence interval for β1. β^1=47, s=6.1, SSxx=47, n=13 95% :  ≤β1≤…

A: We want to find the confidence interval for β1

Q: Agent 003 is hired to test the destructiveness of the government's new UB0531 missile. She tests 111…

A: Given information Sample size n = 111 Significance level(α) = 1 - 0.86 = 0.14 Confidence interval =…

Q: initiative is between (round to 3 decimal places) and (round to 3 decimal places). b. If many groups…

A: given  n1=579x1=408n2=546x2=450 then the proportion are  p1=x1n1=408579=0.704663…

Q: A researcher studying reaction time of drivers states that, A 95% confidence interval for the time…

A:

Q: 3. Ophthalmic lens is used in optical device to enhance vision addressing the visual needs of the…

A: Confidence interval are used to examine the range where the population parameter can occur. It has…

Q: Suppose you are testing Ho = 24.8 vs Ha > 24.8. You find a 90% confidence interval for mu to be…

A: The given hypothesis is  vs .The 90% confidence interval for mu to be .

Q: Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from…

A: The regression equation is .

Q: 1. хI 1.96 () 2. х1 1.645 3. х 1.036 yn А. 90% В. 70% С. 95%

A:

Q: A clinical trial is conducted  to evaluate the effectiveness of a new drug to treat severe asthma.…

A: Given Data   New drug(A) Placebo (B) No asthma 98 74 Asthma 52 76 Total…

Q: Using the t tables, software, or a calculator, estimate the values asked for in parts (a) and (b)…

A: a.) The level of significance is : α=1-0.95  =0.05 The degrees of freedom are df=9.

Q: In a random sample of 850 consumers. 385 reported that they were able to purchase a Playstation 5.…

A: According to the given information, we have In a random sample of 850 consumers. 385 reported that…

Q: A medical study compares the time it takes for a woundto heal with two different medications. At the…

A: The confidence interval is one of the interval estimates and it is used to estimate the unknown…

Q: 2. For a 90% confidence interval between the difference of 2 independent proportions (home runs per…

A: It is given that the level of confidence is 0.90.

Q: A researcher constructed a 95% confidence interval estimate for the difference in mean maximum bench…

A: We have given that  A researcher constructed a 95% confidence interval estimate for the difference…

Q: In a study to compare the effects of two pain relievers it was found that of n₁ = 300 randomly…

A: The random sample of individuals who used the first plan,  The random sample of individuals who used…

Q: Previously, 6% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician…

A: Given x=4 n=140 α=0.1

Q: a)In a random sample of 31 professional actors, it was found that 24 were extroverts. Find a 98%…

A: a) Given data, n=31 x=24 sample proportion p=xn=2431=0.774   z-value at 98% confidence is Zc=2.326

Q: 2. A random sample of 100 students was taken to determine interest in switching to a quarter system…

A: It is given that sample size (n) is 100 and x=73.

Q: A one-sample z-test was used to test the following hypotheses: Ho: μ = 47 and H₁ : µ ‡ 47. Select…

A:

Q: Let (a,b) be 90% confidence interval for e, then p(a <0<b)%3D Select one: a. 0.9 b. 0.5 С. 0.1 d.…

A:

Q: We have created a 97% confidence interval for μ with the result [57, 97]. If we test H0: μ=98 versus…

A:

Q: The average scores for 16 participants is 128, with SD of 28.4 Calculate 95 % Confidence Interval,…

A: Here, we have to use t-distribution since, sample size is less than 30 and population standard…

Q: A random sample of 500 males included 215 that approved of the performance of a President.  A random…

A: Solution-: Given:  n1=500,n2=500,x1=215,x2=185,α=0.05 We want to calculate  (a) p1^, and q1^, p2^,…

Q: A confidence interval was used to estimate the proportion of statistics students who are females. A…

A:

Q: A random sample of residents in city J were surveyed about whether they supported raising taxes to…

A: The confidence interval at 100 (1 – α) % confidence level gives us an interval estimate about the…

Q: According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft,…

A: The number of identity theft complaints is, x=373The total number of complaints is n=1460The defined…

Q: A random sample of n1 = 246 people who live in a city were selected and 70 identified as a "dog…

A: Given problem is :

Q: 4. From an SRS of 600 U.S. adults, 116 live in a multigenerational household (multiple generation…

A: We have given that,  Favorable cases (X) = 116 and sample size (n)=600  Then,  We will find the 95…

Q: In a poll conducted, 439 of 1007 adults in a certain country polled said they were "picky eaters."…

A: a. The proportion of the respondents said they were picky eaters is, p^=xn=4391007=0.4359≈0.44 Thus,…

Q: QUESTION 16 A 95% confidence interval of the mean is (12, 18). The result of testing Ho:u=14against…

A: Given  95% CI for people mean is  (12,18)  Hypothesis  Ho:μ=14 vs H1: μ≠ 14

Q: Give a 99.5% confidence interval, for μ1−μ2μ1-μ2 given the following information. n1=30n1=30,…

A:

Q: 9. Which of the four explanatory variables seems to be the least significant in the model? A)…

A: Decision rule : Higher p value indicates that (independent or explanatory) variable is to be least…

Q: Aprofessor wants to make sure that two different versions of a test are equivalert He decides to…

A: For the variance test, we take larger variance in numerator and smaller variance in denominator.…

Q: A 95% confidence interval of the mean is (10, 15). The result of testing Ho:H= 12 against H:u#12, at…

A: Given information: 95% confidence interval of the mean is (10, 15). Null Hypothesis: Alternative…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.