Question

In: Statistics and Probability

Consider a sample of push pins. Their weights are measured and found to have a standard...

Consider a sample of push pins. Their weights are measured and found to have a standard deviation of 2.02

Give a point estimate for the population standard deviation in weights of push pins. Round your answer to two decimal places, if necessary.

Solutions

Expert Solution

point estimate for the population standard deviation = sample standard deviation = 2.02 (ans)

                                                                                                                                                                                                                                     


Related Solutions

The weights of 89 randomly selected truck engines were found to have a standard deviation of...
The weights of 89 randomly selected truck engines were found to have a standard deviation of 1.59 lbs. Calculate the 95% confidence interval for the population standard deviation of the weights of all new truck engines in this particular factory.
The weights of 3 randomly selected mattresses were found to have a standard deviation of 4.53....
The weights of 3 randomly selected mattresses were found to have a standard deviation of 4.53. Construct the 95% confidence interval for the population standard deviation of the weights of all mattresses in this factory. Round your answers to two decimal places. Find the Lower Endpoint and Upper Endpoint
The weights of 22 randomly selected mattresses were found to have a standard deviation of 3.17....
The weights of 22 randomly selected mattresses were found to have a standard deviation of 3.17. Construct the 95% confidence interval for the population standard deviation of the weights of all mattresses in this factory. Round your answers to two decimal places.
8. A random sample of 10 subjects have weights with a standard deviation of 12.4989 kg....
8. A random sample of 10 subjects have weights with a standard deviation of 12.4989 kg. What is the variance of their​ weights? Be sure to include the appropriate units with the result. The variance of the sample data is nothing ▼ .kg2. kg. kg3. ​(Round to four decimal places as​ needed.) 9. Below are the jersey numbers of 11 players randomly selected from a football team. Find the​ range, variance, and standard deviation for the given sample data. What...
four squirrels were found to have an average weight of 9.0 ounces with a sample standard...
four squirrels were found to have an average weight of 9.0 ounces with a sample standard deviation is 0.7. Find the 95% confidence interval of the true mean weight.
Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.3
Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.3. (Round your answers to four decimal places.) (a) If the distribution is normal, what is the probability that the sample mean hardness for a random sample of 16 pins is at least 51? (b) What is the (approximate) probability that the sample mean hardness for a random sample of 45 pins is at least 51? 
The weights of kittens have a symmetric shape with mean of 3.6 pounds and a standard...
The weights of kittens have a symmetric shape with mean of 3.6 pounds and a standard deviation of 0.4 pounds, answer each of the following: a. What percent of kittens weigh between 2.8 and 4.8 pounds? b. Which weight represents ?84.
Assume that newborn girls have birth weights with a mean of 3021 grams and a standard...
Assume that newborn girls have birth weights with a mean of 3021 grams and a standard deviation of 694 grams. A random sample of 100 newborn girls is obtained and they have a mean birth weight of 2963 grams. What is the probability of randomly selecting another 100 newborn girls and getting a mean birth weight that is 2963 grams or​ lower?
Q1- If you know that the birth weights of male babies have a standard deviation of...
Q1- If you know that the birth weights of male babies have a standard deviation of 1.33 lb. Determine the percentage of all samples of 400 male babies that have mean birth weights within . 125 lb of the population mean birth weights of all male babies.
Rockwell hardness of pins of a certain type is known to have a mean value of...
Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.5. (Round your answers to four decimal places.) (a) If the distribution is normal, what is the probability that the sample mean hardness for a random sample of 16 pins is at least 51? (b) What is the (approximate) probability that the sample mean hardness for a random sample of 45 pins is at least 51?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT