3 Finding the mode and rane trom a line plot www-awu.aleks.com/alekscgi/x/lsl. Ivana is recording the number of points she misses on each math quiz. The inegot below gives he results for the last nine quizzes Number of punte missed (4) Mode Range: D X Find he wed the canas for the data X X X X XXX S Am
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- You source a battery for your product from two different suppliers (A and B). You suspect that theequivalent series resistance (ESR) of batteries supplied by the two suppliers is not the same. Thestandard deviation of ESR from each supplier is 2 ohms. You would like to be able to determine an ESRdifference of 1 ohms between suppliers. How many parts would you need to sample from each supplier(assume you sample the same number from each supplier) for a power level of 90%. Assume the desiredsignificance level (?) is 5%.Assume that the readings on the thermometers are normally distributed with the mean of 0° and standard deviation of 1.00°C. Assume 2.5% of the thermometers are rejected because they have readings that are too high and another 2.5% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. Which graphs represent the region in which thermometers are rejected? The cutoff values are ______ degrees. (Use a comma to separate answers as needed. Round to two decimal places as needed)Find kurtosis by using ungroup data given in the picture using quartile deviation, make sure to arrange data before solving question.
- Having the variation data regression line r=0.931 and the calculated coefficient of determination of 0.867.. And explained variation of the data of 86.7%.. About the unexplained variation? [ ] % of the variation is unexplained and is due to other factors or to sampling error. (Round to one decimal place as needed.)The pulse rates of 161 randomly selected adult males vary from a low of 37 bpm to a high of 97 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 95% confidence that the sample mean is within 4 bpm of the population mean. Complete parts (a) through (c) below. a. Find the sample size using the range rule of thumb to estimate σ.Assume that σ=13.7 bpm, based on the value s=13.7 bpm from the sample of 161 male pulse rates. c. Compare the results from parts (a) and (b). Which result is likely to be better?To compare the effectiveness of competing fertilizers on increasing radish size, researchers randomly divided 20 radish seeds of the same type into two groups of 10 and planted them. To one of the groups they applied Fertilizer A, and to the other, they applied Fertilizer B. Then they measured the radii of the radishes grown from the seeds in the two groups. The results of the experiment are shown in the tables. The mean radius for the group that was given Fertilizer A is (less,greater)than that for the group that was given Fertilizer B. The variability of the radii for the group that was given Fertilizer A is (less/greater)than that for the group that was given Fertilizer B. The data for both of the groups produces a (uniform, non-uniform) distribution.
- A pharmcuticle company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of Mercury) for 9 patients before taking the new drug and 2 hours after taking the drug are shown in the table below. is there enough evidence support the company's claim? Let D =(blood pressure before taking new drug)- (blood pressure after taking new drug).use significant levels of a=their 0.05 for the test. Assume that the systolic blood pressure levels are normally distributed for the population of patience both Before & After taking the new drug. 1.State the null and alternative hypothesis for the test. 2. Find the value of the standard deviation of the paired differences. Round to one decimal place. 3.compute the value of the test statistic. Round to three decimal places 4.determine the decision rule for rejecting the null hypothesis Ho. Round the numerical portion to three decimals. 5.make decision for the hypothesis test.The pulse rates of 174 randomly selected adult males vary from a low of 45 bpm to a high of 105 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 90% confidence that the sample mean is within 2 bpm of the population mean. Complete parts (a) through (c) below. Assume that σ=10.8 bpm, based on the value s=10.8 bpm from the sample of 174 male pulse rates.d. Denote the expected return and its standard deviation as functions of π byμ(π ) and σ (π ). The pair (μ(π ), σ (π )) trace out a curve in the plane as πvaries from 0 to 1. Plot this curve. I need to draw a graph from this??
- A 100- m steel tape is used to measure the distance of the line and found to be 1. 539.28 m long. During measurement, the tape is supported the ends under a pull of 10 kg and the observed mean temperature is 31°C. The tape is of standard temperature of 20°C and a tension of 12 kg. The cross sectional area of the tape is 0.035 sq. cm. The coefficient of linear expansion is 0.0000116/C and the modulus of elasticity of steel is 2.0 x 106 kg/ sq. cm. The tape weighs 1.5kg a) Determine the total correction for temperature. b) Determine the total correction due to sag. c) What is the correct length of the line?The pulse rates of 174 randomly selected adult males vary from a low of 36 bpm to a high of 96 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 98% confidence that the sample mean is within 2 bpm of the population mean. Complete parts (a) through (c) below. A. Find the sample size using the range rule of thumb to estimate σ. n=____ B. Assume that σ=11.5 bpm, based on the value s=11.5 bpm from the sample of 174 male pulse rates. n=___ C. Compare the results from parts (a) and (b). Which result is likely to be better?a) A given distribution has a population mean, μ, of 106 and a population standard deviation, σ, of 8. What z-score would be associated with the value x = 140? b) A given distribution has a population mean, μ, of 138 and a population standard deviation, σ, of 11. What z-score would be associated with the value x = 98? c) A given distribution has a population mean, μ, of 143 and a population standard deviation, σ, of 5. Compute the raw, x-value associated with a Z-score of -2.02. d) A given distribution has a population mean, μ, of 110 and a population standard deviation, σ, of 11. Compute the raw, x-value associated with a Z-score of 1.12. e) Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 88 and 130? f) Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14.…