Question 48 Find the p-value for the hypothesis test. A random sample of size 54 is taken. The sample has a mean of 375 and a standard deviation of 83. Ho: μ = 400 Ha: μ< 400 The p-value for the hypothesis test is Your answer should be rounded to 4 decimal places.

Q: Which graphs are best for showing central tendency and spread of data? Group of answer choices Stem…

A: Here ,  Four graphs are given :  Stem &amp; Leaf plot  : ( It is the diagram , in which data written…

Q: Given the table of weights below a WEIGHTS X-u (x-μ)²

A: WEIGHTS x-μ x-μ2 80   900 100 -10   110   0 120 10 100 132 22

Q: Values are uniformly distributed between 185 and 26 *(Round your answers to 3 decimal places, e.g.…

A: A random variable X~U(185 , 263)

Q: What is the sample mean for the given dataset 72,26,52,73,73,41,63,83,64

A: Answer: From the given data, 72,26,52,73,73,41,63,83,64 Sample size(n) = 9

Q: Using the same question:    Find and interpret the probability that between 9 and 12 between of​…

A:

Q: All the necessary values have been found to find the 95% confidence interval. We have x = 832, Za/2…

A: From the provided information, x̄ = 832 Zα/2 = 1.960 σ = 150 and n= 100

Q: In a random sample of males, it was found that 26 write with their left hands and 212 do not. In a…

A: The CI shows the range of values in which the pop. parameter value lie with certain confidence.

Q: (a) A 95% confidence interval for the mean μ of a population is computed from a random sample and…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…

A: The sample size (number of cities) where people aged 65 and over took part in survey  n1=32The…

Q: Using specific data, we find a significant difference in the proportion of fruit flies surviving…

A: From the provided information, p^o=0.45p^c=0.43SE=0.029α=0.05

Q: the Stanley Cup playoffs in professional hockey is a seven-game series, where the first team to win…

A: Since the two teams are evenly matched, the probability of either team winning a game is 0.5. We can…

Q: A random sample of 985 likely voters was taken; 592 indicated that they approved a reduction in the…

A: Given Information Sample size n=985 voters   and x be the number of voters  indicated that they…

Q: The given table shows a frequency distribution of the number of Galaxy Tabx sold per day at a…

A: Here given x = number of tablets Frequency = fi

Q: In a 2008​ survey, people were asked their opinions on astrology​ - whether it was very​ scientific,…

A: We have given that people were asked their opinions on astrology​ - whether it was very​ scientific,…

Q: The number of ants in a group is normally distributed with a mean of 67.0 and a standard deviation…

A: Let X be the random variable for the number of ants in a group. Given that, X~N(μ=67.0, σ=83.64)…

Q: The regression equation between X and Y is Y = 1.2 X + 6 Predict the value for x = 5?

A: Answer: From the given data, The regression equation between X and Y is given as Y = 1.2 X + 6

Q: 2. The U.S. Department of Agriculture reports in Food Consumption, Prices, and Expenditures that the…

A: Comparing of hypothesized mean with the sample mean can be done by using single sample t - test or…

Q: A magazine article conducted a survey of 807 people in Phoenix metro area and found that 45% of the…

A: Sample size (n) = 807 Population proportion (p) = 45% = 0.45 And  97% confidence interval is (41%,…

Q: If one card is drawn from a well shuffled deck of 52 cards, What is the probability of getting a…

A: Answer: From the given data, Total number of cards in a deck = 52 Number of jokers in a deck = 2

Q: The necessary value for Za/2 was determined to be 1.645. Recall the given information. Sample 1…

A: Zcritical=1.645 at level of significance ɑ=0.10 for two tailed

Q: Please no written by hand solutions An id is created using 3 letters and 3 digits. How many…

A: Answer: Given that, An id is created using 3 letters and 3 digits Total number of letters from A to…

Q: Assume a member is selected at random from the population represented by the graph. Find the…

A: Let X be the random variable from normal distribution with mean (μ) = 507 and standard deviation (σ)…

Q: Below are data for yields from two different types of see (regular and kiln dried) that were used on…

A: We have given paired data for yields from two different types of seed (regular and kiln-dried) as…

Q: ← A study was done on body temperatures of men and women. The results are shown in the table. Assume…

A: Men Women n1=11 n2=59 x¯1=97.74 x¯2=97.26 s1=0.86 s2=0.73

Q: Many members of a certain workforce died from cancer supposedly resulting from exposure to…

A: It is given that  Population proportion, p = 40% = 0.40 Favourable cases, X = 92 Sample size, n =…

Q: The degrees of freedom for chi square test of a contingency table with 7 rows and 4 columns.

A: Answer: From the given data, number of rows in chi square test of contingency table (r) = 7 number…

Q: 1. Consider a Gaussian statistical model X₁,..., Xn~ N(0, 0), with unknown > 0. Note that Var (X) =…

A: The likelihood function for the Gaussian statistical model is given…

Q: Find the expected value for the following probability distribution: X            0    5     10  15…

A: X            0    5     10  15 P(x)     0.2 0.3 0.25 0.25

Q: A binomial probability experiment is conducted with the given parameters. Compute the probability of…

A: sample size(n)=20 p=0.96 x=18 x~Binomial(n=20,p=0.96) P(X=x)=nx×px×(1-p)n-x    ; x=0,1,...,n

Q: For a standard normal table or Excel function find the given probability, Calculate P(Z>0.63)

A: Answer: From the given data, P(z&gt;0.63) is,

Q: p. P(Z ≥ 1.4) = Ketch the curve corresponding to this probability Shade: Left of a value -4 -3 -2 ✓.…

A: Z has follows standard normal distribution with mean zero and standard deviation one.

Q: 2. A producer of outdoor clothing used a focus group to obtain information about the demand for…

A: Price (x) Demand (y) 100 23 90 31 80 40 70 44 60 48 50 60

Q: Find the area under the standard normal distribution between z= -0.88 and z = 1.04? Express your…

A: Answer: For the given data, Using Standard normal distribution (Z), We have to find the area between…

Q: The confidence interval estimate is mi/h <o< (Round to one decimal place as needed.) mi/h. Does the…

A: Let σ be the population standard deviation. Sample size (n) = 12 Confidence level (C) = 95% = 0.95…

Q: Critical values for quick reference during this activity. Confidence level Critical value 2 = 1.645…

A: Margin of error=3.54%=0.0354  We have to find number of voters should be sampled for 99% confidence…

Q: 4. Find a 95% confidence interval for the difference of two means when you have independent samples,…

A: We have two independent samples. n1=64,  s12=6.1,  x¯1=7.9 n2=64, s22=10.4, x¯2=8.5 Confidence…

Q: PLAN: Drag each statement from the answer bank to the appropriate box. n (1 po) = 75 ≥ 10 True…

A: Sample size (n)=250 teenage  Population proportion (p)=0.70  Sample proportion (p^)=0.792  We have…

Q: Suppose there are 12 blue, 8 white and 6 red balls in a bag. If one ball is randomly selected…

A: Answer: From the given data, Number of blue balls = 12 Number of white balls = 8 Number of red balls…

Q: Find the expected value for the following probability distribution: X 5 10 15 20…

A: Answer: From the given data, X     : 5     10   15   20 P(X) : 0.3  0.1  0.4  0.2

Q: Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars,…

A: The hypothesis will be: H0 : There is no significant differences in the frontal crash test…

Q: 1. During the COVID-19 Pandemic, while school-aged children were attending classes online, 70% of…

A: Sample size n =500 Favorable cases x =335 Sample proportion p^=x/n  =335/500 =0.67

Q: Determine if the following statement is true or false. If you believe that the statement is false,…

A: Small values of χ2 imply that the null hypothesis in a chi-squared test is true. To determine if the…

Q: A random sample of n = 36 observations is drawn from a population with a mean equal to 15 and a…

A: As per our guidelines we are suppose to answer only three sub parts. Sample size(n)=36 Mean(μ)=15…

Q: 1. ANOVA is an omnibus test     True   False   2. OLS can be used for regression and ANOVA   True…

A: 1)- True -   ANOVA (Analysis of Variance) is an omnibus test, which means it is a statistical test…

Q: The Nile Superstore is conducting a survey of consumer preferences for a new wireless e-book reader.…

A: Sample size n =150 Favorable cases x =122 Sample proportion p^=x/n =122/150 =0.8133   NOTE:-…

Q: A nursing home manager claims that the average number of infections per week at the hospital is…

A: The sample size is 12, sample mean is 23.5 and sample standard deviation is 3.3. The given claim is…

Q: One Quantitative Variable, Single Group Variable name: Temperature Input: Raw data Input data…

A: There are 8 observations in the data. Thus, n = 8. The mean is calculated as follows: x¯=∑xn…

Q: A local grocery store wants to estimate the mean daily number of gallons of milk sold to customers.…

A: population standard deviation(σ)=2.4 sample size(n)=60 Mean(x)=15.9

Q: Using standard normal table or Excel function, Calculate the P(Z>0.67) Round to four decimals

A: Answer: Here, we have to calculate P(Z &gt; 0.67) Using standard normal table or Excel function

Q: The average number of Toyota Fortuner cars that you can see on your drive to work is 25, What is the…

A: Answer: From the given data, X~Poisson distribution, λ = 25 X = 29