Calculate z and P-Value Using Normal Distribution Table Interrupt your result
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Calculate z and P-Value Using
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- What graph do we use the check if the assumption of constant variance of error is valid? (check Var(8) = o) O Sscatterplot ofY vs. X1 O Histogram of Residuals O Normal Probability Plot O Residuals vs. Fitted ValuesWhich is a correct description of the normal distribution? mean> median < mode mean = median mode mean < median < mode mean < median mode SAMSUNG Ahe sampling distribution of differences between means approximates a normal cure whose is zero. mode median mean standard deviation
- fine the area under the standard normal distribution curve between z= 0 and z = -2.16.Estimating Mean SAT Math Score The SAT is the most widely used college admission exam. (Most community colleges do not require students to take this exam.) The mean SAT math score varies by state and by year, so the value of u depends on the state and the year. But let's assume that the shape and spread of the distribution of individual SAT math scores in each state is the same each year. More specifically, assume that individual SAT math scores consistently have a normal distribution with a standard deviation of 94. An educational researcher wants to estimate the mean SAT math score (u) for his state this year. The researcher chooses a random sample of 681 exams in his state. The sample mean for the test is 486. Find the 99% confidence interval to estimate the mean SAT math score in this state for this year. Use the unrounded values in Excel to find the answers to #2, #3 and # 4. 1. The z-value is -- ✔ 2. The standard error has a value of -- 3. The margin of error has a value of - 4.…Determine the area under the standard normal curve that lies to the right of (a) Z= - 0.27, (b) Z= - 0.68, (c) Z = 0.11, and (d) Z= – 1.16. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). Standard normal distribution kable (page 2) (a) The area to the right of Z= - 0.27 is (Round to four decimal places as needed.) Area Standard Nornal Distribution 0.05 0.00 0.01 0.02 0.03 0.04 0.06 0.07 0.08 0.09 0.5000 0.5398 0.5793 0.6179 0.6554 0.5040 0.5438 0.5832 0.5080 0.5478 0.5871 0.6255 0.6628 05120 0.5517 0.5910 0.6293 0.6664 0.5160 0.5557 0.5948 0.5199 0.5596 0.5987 0.5239 0.5636 0.6026 0.6406 0.6772 0.5279 0.5675 0.6064 0.6443 0.6808 0.5319 0.5714 0.6103 0.5359 0.5753 0.6141 0.0 0.1 0.2 0.3 0.4 0.6217 0.6591 0.6331 0.6700 0.6368 0.6736 0.6480 0.6844 0.6517 0.6879 0.7190 0.7517 0.7823 0.7224 0.5 0.6 0.7 0.6915 0.7257 0.7580 0.7881 0.8159 0.6950 0.7291 0.7611 0.7910 0.8186 0.6985 0.7324 0.7642 0.7019…
- Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. Click to view page 1 of the table. Click to view page 2 of the table. The area of the shaded region is (Round to four decimal places as needed.) ew an example Get more help. Clear all ^ Z=0.29 Ch AutoPlay Apple iPhone Select t oTech Worx magazine reported that91%of software engineers rate the company they work for as "a good place to work." You are a headhunter, and as such you state that the percentage in the report is not correct. In a survey of220randomly selected software engineers, 207rated the company they work for as "a good place to work." Complete the parts below to perform a hypothesis test to see if there is enough evidence, at the significance level of0.05, to support his claim that the ratio,p, of all software engineers who rate the company they work for as "a good place to work" is not91%. (to) Formulate the null hypothesish and the alternative hypothesish that you will use in your test. ho: 0 h₁:0 Р np= n61-p) = (c) carry out aZ -testand find thep-value. OIn what way can probability or proportion be represented in terms of the distribution? Standard deviation None of these Z-score F-statisticSEE MORE QUESTIONS
