Find the standard deviation, s, of sample data summarized in the frequency distribution table given below by using the formula below, where x represents the class midpoint, f represents the class frequency, andn represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 9.0. [E(1•x*)]-[E«•x]° n(n - 1) Interval 30-39 40-49 50-59 60-69 70-79 80-89 Frequency 19 41 20 8 1 Standard deviation = (Round to one decimal place as needed.)

Q: For a standard normal distribution, find: P(z > c) = 0.8946 %3D Find c rounded to two decimal…

A: Given info: For a standard normal distribution, P(z > c) = 0.8946.

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A: By using synthetic division to divide the polynomial x4+3-hx3-2hx2-2h2x+h3 by the polynomial x-h.

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A: Step 1:

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Q: Find the number of roots for the equation. 5x4 + 12x³ – x² + 3x + 5 = 0

A: As we know that the number of roots is equal to the highest power of the polynomial.

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Q: Explain how the Root Test works.

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A: *used power rule

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A: Apply integration by parts:

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A: Step 1: Step 2: Step 3: Step 4:

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Q: not using excel can this problem be solved?

A: The mean is $31,000, standard deviation is $3000.

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A: Step 1: Step 2: Step 3: Step 4:

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A: It's a platform where students ask questions regarding their homework.

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.