Statistics Question

Q: 12) A state fish hatchery raises trout for stocking streams and lakes. The size of the fish at relea...

A: GivenClaim : If fish being released have population mean less than 14 ounces. Null hypothesis : H0:μ...

Q: A statistician wishing to test a hypothesis that students score at least 75% on the final exam in an...

A: Given information Sample mean x̅ = 78 Population mean µ = 75 Sample size = 20 Standard deviation = 1...

Q: For two events A and B, P(A) = 0.42, P(B) = 0.39, and P(A and B) = 0.27. Find P(A or B). Then explai...

A: From the provided information, P (A) = 0.42, P (B) = 0.39 and P (A and B) = 0.27

Q: Two machines are used to fill plastic bottles with dishwashing detergent. The standard deviations of...

A: Answer:-  The standard deviation of population are known, we will use Z test.

Q: lation between police protection and A random sample of large population areas gave the following in...

A: Spearman rank correlation: It measures the degree of the association between two ranked variables. A...

Q: Find the two tailed critical value for 95% confidence level.

A: Given: Confidence level = 95% The level of significance is: Level of significanceα = 1-confidence le...

Q: A relationship expert wants to know if people with higher levels of emotionalintelligence (measured ...

A: Given Information :  A relationship expert wants to know if people with higher levels of emotional i...

Q: A random sample of 19 companies from the Forbes 500 list was selected, and the relationship between ...

A: State the hypotheses.   Obtain the degrees of freedom. Therefore, the total number of observations ...

Q: It’s not graded. Can you explain (C) and (D) please?!

A:  

Q: (chapter 15) Given the following information: County of San Diego Daily 2019 Novel Coronavirus (COVI...

A: Solution: The classification of a random sample of 99,599 positive cases according to race and ethni...

Q: Suppose a random sample of 808 athletes from the college are asked what their major is. The table be...

A: The Goodness of Fit Test:-  This test enables us to find if the deviation of the experiment from the...

Q: It’s not a graded question. It’s review. Can you please explain it step by step so i can pass my e...

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...

Q: Find the p-values for the following using the given information assume Alpha is 0.02 State whether y...

A: A. The test is both tailed test.

Q: Alyssa and Alan medical group found that the mean annual earning of the pharmacist in the US are $23...

A: Given information : mean  x1 = 230000x2 = 225000 Sample size n1 = 300n2 = 400 Standard deviation σ1 ...

Q: 15. Hypothesis testing with small sample size when population is known to be normal, but sample size...

A: Given Data: x¯=12.5n=18s=0.6   a) Null and Alternate Hypothesis: H0: μ=11 HA: μ>11

Q: The management of a supermarket wants to adopt a new promotional policy ofgiving free gift to every ...

A: Given :    Mean μ =400standard deviation (σ) =900 3) To find probability of selecting a customer who...

Q: A lightbulb’s lifetime is exponential distribution with variance 4 years . (1) If we define X as the...

A: Solution: Let X be the lifetime. From the given information, X follows exponential distribution with...

Q: Question 28, part 2 Before the furniture store began its ad campaign, it averaged 146 customers per ...

A: State the hypotheses.  

Q: You are the VP, Advertising for "Yo' Mama" brand, a fashion label that caters to the young, trendy c...

A: Use the given data to form excel table:   Hispanics(x) x-μ x-μ2   24200 8300 688...

Q: Question 4 The following table displays the mathematics test scores for a random sample of college s...

A: From the data: x y x2 xy 39 65 1521 2535 43 78 1849 3354 21 52 441 1092 64 82 4096 5248 ...

Q: A researcher wanted to know if there is a relationship between level of anxiety students have and th...

A: Let ρ denotes the population correlation between level of anxiety students have and their score on t...

Q: The degree of clinical agreement among physicians on the presence or absence of generalized lymphade...

A: Given,  mean differences of Doctor A and B ; X1-X2=2.75  Difference in standard deviations of both D...

Q: A grocery store manager did a study to look at the relationship between the amount of time (in minut...

A: Note: Hi there! Thank you for posting the question. As there are  multiple sub parts, according to o...

Q: Fast reactions: In a study of reaction times, the time to respond to a visual stimulus x and the tim...

A: The sums are, x y x2 xy 161 159 25921 25599 211 189 44521 39879 191 169 36481 32279 176 1...

Q: A survery was taken of 125 fans. They were asked what was the most expensive ticket you ever bought ...

A: Given : Min = 25 Q1 = 95 Median, Q2 = 110 Q3 = 135 Max = 175 IQR = Q3 - Q1 IQR = 135 - 95  IQR = 40

Q: Reaction Time Study.  You have administered a reaction time test to thousands of people and found th...

A: Given that, Mean = 150 Standard deviation = 25

Q: Statistics Question

A: From the provided information, Population proportion (p) = 0.28 a) The hypotheses can be constructed...

Q: T2.3 Compute the binomial probabilities. a) P(4 <= X <= 8), when n = 15 and p = .40 (using the...

A:

Q: Thank you so much

A: The data can be summarized as:   Values(xi) Frequency(fi) 45 1 46 1 47 2 48 2 49 3 50...

Q: You are trying to develop a strategy for investing in two different stocks. The anticipated annual r...

A: Given: The return of both stocks with their associated probabilities is as follows Stock X Stock ...

Q: The sale price of the 2021 infinity qx50 follow an approximately normal distribution. 60% of custome...

A: Given Information :  The sale price of the 2021 infinity qx50 follow an approximately normal distrib...

Q: The standard deviation for all SAT scores is 72.3. A random sample of 57 tests has a(n) average scor...

A: Null hypothesis: µ=1352. Alternative hypothesis: µ≠1352. Here, the sample mean, is 1393. Population ...

Q: When a group of subjects entered a room, researchers recorded both the color of shirt worn by thesub...

A: Solution: The observed frequency table is    Smiled  No Smiled Total Green Shirt 15 10 25 Blu...

Q: Find the interval [ μ−z σn√,μ+z σn√μ−z⁢ σn,μ+z⁢ σn ] within which 95 percent of the sample means wou...

A: Given: The formula for the calculation of interval is: μ-Zσn,μ+Zσn 

Q: Random samples of two species of iris gave the following petal lengths (in cm). X,, Iris virginica X...

A: a).   Consider that σ is the standard deviation of the peal length of x1. Here, the claim is that th...

Q: Data were collected on the Facebook website about the most “liked” fast-food brands. The data values...

A: From the given information, Consider, the range of the is given to us that ranged from  1.0 million ...

Q: For a fabric, the number of defects per square yard is counted on 100 samplespecimens, each 1 square...

A: Given: No of defects Frequency (f) 0 1 1 4 2 15 3 35 4 45 α=0.05

Q: Thanks a lot

A: Given, There are 51 values. The stem and leaf are already arranged in ascending order.

Q: please help me with this. I will give a thumb up.

A: It is an important part of statistics. It is widely used. 

Q: The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation...

A: P value gives the probability of observing the values as extreme as the ones observed (sample) for c...

Q: Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean ...

A: Given: Method A:μ=26 minutes, σ=4 minutesMethod B:μ=30 minutes, σ=2 minutes

Q: Find the critical value(s) and rejection region(s) for a right-tailed chi-square test with a sample ...

A: Obtain the critical value at the 0.10 level of significance with the sample of 12. The critical valu...

Q: Can you explain it step by step

A: Hey there! Thanks for posting the question. However, we can answer only first three sub-part questio...