If it is known that the percentage of successful students is 75%, and you take a sample of 15 students, calculate 1. The probability of having 10 successful bears 2. The probability of success of more than 13 students 3. variance

Q: Determine the cumulative deviations and the backlog for each period.

A: we use excel to solve this problem

Q: Consider the following sample with 20 observations: 1   1   5   7   9   11   11   14   14   19 20…

A: Sol:- Interquartile RangeThe interquartile range is the difference of the first and third…

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A: Given information: Minor dealt with by first aider: Average cost k 50. Major hospital required:…

Q: Suppose X ~ N(3, 1.2). What value of x is two standard deviations to the right of the mean?

A: from given distribution in question,   mean :-μ=3 standard deviation :-σ=1.2 X is two standard…

Q: In the twentieth century, it was a common practice in Southern California for houses to be built…

A: From the provided information,

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A: " Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: Discuss the following; What type of data can be examined using the Chi-Squared Test? What is the…

A: Chi-square test is a statistical method used to test the goodness of fit of the model. It is used…

Q: "The US Centers for Disease Control and Prevention said about 72 million Americans-nearly one out of…

A: Type I error is the probability of rejecting the null hypothesis when it is actually true.

Q: d. Find the Inter Quartile Range (IQR) for time spent at the hot springs. Q1: minutes Q3: IQR:…

A:

Q: Determine whether the outcome is a Type I error, a Type II error, or a correct decision. A test is…

A: Given H0: μ = 45 vs H1: μ< 45 Ho is not rejected

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A: From the provided information, Population standard deviation (σ) = 44.7 Margin of error (E) = 3…

Q: The mean number of cars confiscated by a wrecker is five per day.  Using the Poisson distribution,…

A: Given dataλ=5

Q: Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given…

A: Note: As per my policy i can answer only three sub parts . kindly repost the remaining ones. Given…

Q: If X-N(0, 1), then Y = 2X + 1 is distributed: Normal with mean 1 and variance 0 O Normal with mean 3…

A: Given that  X~ Normal( Mean = 0 , Variance = 1 )

Q: The table below shows the number of state-registered automatic weapons and the murder rate for…

A: From the provided information, The linear regression equation is as follow: y = 0.81x + 4.35 x =…

Q: Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of…

A: Given Mean= 5.40 Sd = 2.50 Sample size = 55

Q: 6. Given: x = 2x / (10,000 - x²)

A: Given:  μx=2x10000-x2

Q: 1. Consider the population consisting of the values (1, 3, 8). a. List all the possible samples of…

A: Given Sample: {1,3,8} Note: According to Bartleby guidelines expert solve only one question and…

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 118…

A: a. Suppose a random variable X, defines the systolic blood pressure of adults.

Q: Suppose 226 subjects are treated with a drug that is used to treat pain and 54 of them developed…

A: Given: n = 226 X = 54 P = 0.20 α = 0.10 Formula Used: Test-statistic Z = p^-PP(1-P)n

Q: 6. In Professor Meanscore's class, the first midterm exam and the second midterm exam are weighted…

A: Given At x-axis = first midterm exam scores At y-axis = second midterm exam scores Both weighted…

Q: DO THIS TYPEWRITTEN AND WITH COMPLETE SOLUTIONS. NO UPVOTE FOR HANDWRITTEN. I WILL UPVOTE. DOWNVOTE…

A: The given data is Month Advertising Expense Sales Revenue April 10 180 May 14 170 June 12…

Q: In a survey of 3500 ​adults, 1443 say they have started paying bills online in the last year.…

A:

Q: In a study on speed control, it was found that the main reasons for regulations were to make traffic…

A: Correlation coefficient is given by,   Breaking distance depends on MPH.  So breaking distance is…

Q: d. What is the null hypothesis, and what do you conclude about it? Identify the null hypothesis. A.…

A: It is given that P-value = 0.1476815015 Level of significance = 0.05

Q: For a data set of brain volumes ​(cm3​) and IQ scores of eleven ​males, the linear correlation…

A: The linear correlation coefficient for the brin volumes and IQ scores of eleven males is 0.883.

Q: For this study, we should use Select an answer The null and alternative hypotheses would be: Ho: ? ✓…

A:

Q: Suppose i) the moment generating function technique to find the probability distribution Write down…

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Q: random variable X = (X1, X2........Xn) follows Poisson distribution with parameter A which are…

A: Solution is given below

Q: 1. Assume Gauss-Markov assumptions hold. Prove the OLS estimator of Bo is consistent. Using…

A:

Q: One variable A. 3 moments, calculation and definition B. Normal distribution density function C.…

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: show that a RW model without drift is non stationary when doing times series

A: Given the statement that a random walk (RW) without drift is non stationary.

Q: Whale # 1 2 3 4 Length (m) 25 27 26 24 5 23

A:

Q: B. The average exam score for 10 students in a statistics class was 85. One student dropped the…

A: Given When n=10, average exam score for 10 students in a statistics x̄=85  When one student dropped…

Q: A manufacturing company is analyzing its accident record. The accidents fall into two categories:…

A: From the given information, the accident falls into two categories: Minor and majorAverage cost for…

Q: Match each term with its notation. Enter the number corresponding to the correct notation in the…

A: The objective is to match each term with its notation:

Q: Let Z₁ X₁¯μX~N(0,1), and W₁ = = Yi-Hy σy ~N(0,1), for i = 1,2,3,...,10, then: σχ i) State, with…

A: Given Zi~N(0,1) and Wi~N(0,1)  Result: t~F(a,b) Then  Mean=E(t)=b/(b-2) V(t)=2b2 (a+b-2)/[a(b-2)2…

Q: Consider the tossing of 3 different coins. Let X₁: number of heads nd coin and X₂: number of heads…

A:

Q: On a particular day, Mobay Electronics produced 10000 electric bulbs at a meanproduction rate of 10…

A: Given that: Total number of electric bulbs, n=10000 Population mean, μ=10 Sample mean, x¯=10…

Q: Which of the following statements is true? a. The sum of the deviations from the mean is always…

A: The sum of the deviations from the mean: ∑(Xi-X) = ∑Xi-∑X= ∑Xi-nX=  ∑Xi-n∑Xin= ∑Xi-∑Xi= 0 The sum of…

Q: 1. A quality manager is analysing the scrap metal that is created in the manufacturing of bolts from…

A: We state the hypothesis for the above situation.  H0: There is no statistical relationship between…

Q: Following is the distribution of the amount of time spent in the exercise room of a health club by a…

A: Given data: Number of minutes Frequency 0 < 10 8 10 < 20 21 20 < 30 28 30 <…

Q: Identify the lower class limits, upper class limits, class width, class midpoints, and class…

A: The frequency distribution shows the blood platelet count of females.

Q: Problem #12

A: T test are used to compare mean. Anova also used to compare means. While t test compare two sample…

Q: A random sample selected from a normal population with mean variance o2 gave the values 25, 31, 23,…

A:

Q: 5- There is two project as follows: Probabilities The first year A B 25% 1000 500 50% 2000 1000 25%…

A: 1 year   2 year probabilities A B A B 0.25 1000 500 0 1000 0.5 2000 1000 2000 1500 0.25…

Q: b) Let Z₁ = X-X~N(0,1), and W₁ YHYN(0,1), for i=1,2,3,...,10, then: Σt=1²₁ i) State, with…

A: Given Zi~N(0,1) and Wi~N(0,1)  Result: t~F(a,b) Then  Mean=E(t)=b/(b-2)…

Q: to worker, and the company decides to eliminate this effect by selecting 8 workers at random and…

A: From the provided information, Sample size (n) = 8 Level of significance (α) = 0.05

Q: Let's say that a researcher conducts a study with 4 groups, each with 7 participants. Fill in the…

A: For the given data Complete the Anova table Find critical values Find conclusion at alpha=0.05

Q: What is the forecast for week 10?        What is the Mean Absolute Error (MAE)?

A: From given data : The number of cans of soft drinks sold in a machine each week is 155, 145, 155,…