It is known that 8% of the population has some form of malaria. A diagnostic test will test positive 95% of the time among patients with cancer and test negative 90% of the time among patients without cancer. A person selected at random tests positive. What is the probability that he has cancer?

Q: Directions. Test the significance of the following correlation coefficients. 3. -0.58 4. 0.63 5.…

A: 3) The correlation coefficient is -0.58.

Q: (a) From the regression equation, what is the predicted sleep time (in hours) when the GAS score is…

A: It is given that the GAS score represented by x and the number of hours of sleep last night…

Q: In a controlled experiment, the height Y in feet of a tree and the amount of water x in ounces…

A: The variable y is height and the variable x is amount of water.

Q: A chi-square homogeneity test is to be conducted to decide whether a difference exists among the…

A: According to the given information in this question We need to find the degree of freedom of chi…

Q: If a variable is normally distributed with a mean of 30 and a standard deviation of 6, what is the…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Q: 6. The following sample contains the scores of 6 students selected at random in Mathematics and…

A: S

Q: Nolan hopes to determine the difference in the proportion of males and females who play video games…

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Q: A study of 822 patients involved testing whether or no aspirin was an effective treatment for blood…

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Q: Fast-food restaurants may be able to decrease yearly expenses simply by decreasing the size of the…

A: Chi-square distribution : A probability density function that, among other things, has the property…

Q: A pair of dice is rolled 500 times and we observe the following frequencies for the sum on the faces…

A:

Q: eet Bedroom 4 23327

A: The intensity and direction of the linear relationship between x and y are shown by the correlation…

Q: The time required to assemble an electronic component is normally distributed with a mean and a…

A:

Q: Fifty-five customers of a large-chain grocery store are asked to fill out an in-store survey. One of…

A: Given data Fifty-five customers of a large-chain grocery store are asked to fill out an in-store…

Q: An advertisment claims that 62.3% of customers are satisfied with a certain bank. What is the…

A: The number of bank customers is 550.

Q: Where you live, you can pick up an order from Costco in about 15 minutes by walking. We would like…

A: Given that  Sample size n =8 Sample mean =23.1 Sample standard deviation =14.328

Q: The higher the difference between the observed value of y and the predicted value of y, the better…

A: The observed value of dependent variable is represented by y and the predicted value is represented…

Q: The five number summary of a dataset was found to be: 1, 6, 12, 15, 20 An observation is considered…

A: It is given that  The five number summary of datasets Minimum value = 1 First quartile, Q1 = 6…

Q: Pan style 199 Based on this information, of the next 1500 pizzas she sells, how many should she…

A: It is given that the Izzo’s Pizza sells four types of pizza crust namely; Thin crust, Thick crust,…

Q: Suppose x has a distribution with ? = 29 and ? = 27. (a) If a random sample of size n = 43 is…

A: The mean is 29 and the standard deviation is 27.

Q: In a sample of 600 Ottawa families, it is found that 360 rent their dwellings while 240 own their…

A: It is given that sample size (n) is 360 and x is 240.

Q: A regression was run to determine if there is a relationship between hours of study per week (x) and…

A: Given that  y=ax+b a = 5.235 b = 21.73 r ^2 = 0.36 r = 0.6

Q: 20. A die is rolled 480 times. Find the mean and standard deviation of the number 2s that will be…

A: 20) The number of times the die is rolled is 480.

Q: A. Find the value of the test statistic. (Round to two or more decimal places.) B. Find the…

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Q: a) Verify the requirements for the confidence interval: b) Confidence Interval: c) Interpret the…

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Q: b) Explanation: Let we should replace the bulb in X hours, if we want not more than 2% of the bulbs.…

A: Solution-: Given: μ=500,σ=50 We want to find x value such that, P(X≤x)=2%

Q: OBSERVED Ran red-light Did not run red-light Is there evidence running red lights and speeding are…

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Q: Find the​ P-value. ​(Round to three decimal places as​ needed.)   Do the data provide sufficient…

A: Chi square test is used to determine the relationship between the categorical variable. It used to…

Q: Using a probit model on the willingness to avail a loan product example above, the resulting…

A: When Household income is 10000 Z=91.6-0.009*10000 Z=1.6 hence the probability of Z<1.6 using the…

Q: A weed killer is to be applied at a rate of two ounces per 1000gallons of water (2oz/1000gallons).…

A: GivenThe applied rate of a weed killer is 2 Oz/1000 gallons 28.375 mL per 1 Oz 4.5 liters per 1…

Q: A study was performed on wear of a bearing y and its relationship to x1 = oil viscosity and x2 =…

A: The normal equations for the regression equation, Y=β0+β1x1+β2x2 are,…

Q: What is the P VALUE? H(0) P= .68 H(A) P> .68 Sample size of 46.  63 People were surveyed. 48…

A: Given: P = 0.68 It is given that, 63 people were surveyed in which 48 voted YES, and 15 voted NO. X…

Q: In the following, convert an area from one normal distribution to an equivalent area for a different…

A: Given: Mean(μ)=40standard deviation(σ)=8Random variable (x)= right of 50 x follows normal…

Q: Suppose that the pairwise comparison method is used on the following preference table. If A, C, and…

A: WE WILL USE PAIRWISE COMPARISON METHOD in this total 10 comparisons are made A vs B A vs C A vs D A…

Q: Software use On a regular basis Not on a regular basis Total Under 18 132 0 180 0 0 312 18-35 111…

A: The objective is to fill in the missing values in the contingency table. Given data:   Under 18…

Q: A teacher is explaining to her class the concepts of genetics regarding eye color. She assumes that…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: he lifetimes in hours of two brands of batteries follow normal distributions with means μX ,μY…

A: The solution is given in the steps below.  Thanks!

Q: Giving a test to a group of students, the grades and gender are summarized below   A B C Total…

A: The number of males students who would receive grade B (x) is 3 and the total number of males (n) is…

Q: Each experiment compares three treatment conditions, and each experiment uses separate samples of n…

A: Given data Experiment A treatment 1               2               3 M=1       M=2         M=3 s=10…

Q: Show a One-Way ANOVA using the dataset found in the given excel (Sheet name: Smoking). Copy the…

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

Q: find the margin of error of a 99% confidence interval for the mean score of all student

A: It is given that  Sample mean = 93 Sample standard deviation, s = 7 Sample size, n = 30

Q: The annual salary for one particular occupation is normally distributed, with a mean of about…

A: The mean is 131,000 and the standard deviation is 17,000.

Q: 12.52 10.75 8.18

A: The correlation coefficient is a statistical indicator of how closely two variables change in…

Q: In a recent poll of 2,500 homeowners in the United States, one in two homeowners reports having a…

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Q: An investigation was carried out to determine how the supply of a growth hormone affects the weight…

A: Given: Control Group: n1 = 5 X1 = 41.8 s1 = 7.6 Treated Group: n2 = 7 X2 = 60.8 s2 = 16.4…

Q: Ho: p = 0.75 H₁: p < 0.75 at the 0.05 significance level. The value of the test statistic and the…

A: Given that  Sample size n =200 Favorable cases x =130 Sample proportion p^=x/n  =130/200 =0.65

Q: Fill in the missing values in the contingency table. Round your expected frequencies to two or more…

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Q: Let X be a random variable with the following probability distribution. Value X of X P(X=x) 30…

A: Given that  Probability mass function of X is  Value x 30 40 50 60 70 80 P(X=x) 0.15 0.25 0.20…

Q: (a) Obtain the distribution function of X. (b) 1 Find the probability density function of Y= X

A: From given data we have; A random variable X has a probability density function fx(x)=0; x&lt;012;…

Q: Find Za/2 for the following confidence levels: (a) 93.6% (Round to 2 decimal places) X (b) 88% (Give…

A: Givena)Confidence level = 93.6%

Q: Shelly polled students at her university to see what proportion are in favour of a slight tuition…

A: Given: Sample size n=250 The number of students in favor of the tuition increase is x=131