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An assembly-line machine turns out washers with the following thicknesses (in millimeters). Find the mean and...
An assembly-line machine turns out washers with the following thicknesses (in millimeters). Find the mean and standard deviation of the thicknesses. 1.75 1.81 1.38 1.89 1.82 1.36 1.95 1.65 1.76 1.24 1.41 1.51 1.79 1.64 1.26 1.78 The mean is mm. (Round to four decimal places as needed.)
An assembly-line machine turns out washers with the following thicknesses (in millimeters). Find the mean and standard deviation of the thicknesses. 1.82 1.64 1.53 2.03 1.93 1.92 1.87 1.51 1.91 1.74 2.02 1.24 1.98 1.28 1.31 1.72
12. The systolic blood pressures of a sample of adults are normally distributed, with a mean pressure of 115 millimeters of mercury and a standard deviation of 3.6 millimeters of mercury. The systolic blood pressures of four adults selected at random are 121 millimeters of mercury. 113 millimeters of mercury, 107 millimeters of mercury, and 128 millimeters of mercury. The graph of the standard normal distribution is shown to the right. Complete parts (a) through (c) below. (a) Without converting...
For this exercise, you will need to use the packages `mosaic` and `dplyr`. ```{r warning=FALSE, message=FALSE} # install packages if necessary if (!require(mosaic)) install.packages(`mosaic`) if (!require(dplyr)) install.packages(`dplyr`) # load the package in R library(mosaic) # load the package mosaic to use its functions library(dplyr) # load the package dplyr to use data management functions ``` 1. For decades it's been suspected that schizophrenia involves anatomical abnormalities in the hippocampus, an area of the brain involved with memory. The following data...
Suppose 1000 coins are tossed. Use the normal curve approximation to the binomial distribution to find the probability of getting the following result. Exactly 495 heads Use the table of areas under the standard normal curve given below. Click here to view page 1. Click here to view page 2. Click here to view page 3. Click here to view page 4. Click here to view page 5. Click here to view page 6. The probability of getting exactly 495...
Suppose 16 coins are tossed. Use the normal curve approximation to the binomial distribution to find the probability of getting the following result. More than 11 tails. Use the table of areas under the standard normal curve given below. Click here to view page 1. Click here to view page 2. Click here to view page 3. Click here to view page 4. Click here to view page 5. Click here to view page 6. Binomial probability = (Round to...