1)
Express the confidence interval (25.6%,38.6%)(25.6%,38.6%) in the
form of ˆp±ME
____ % ± ___ %
2)
In a recent poll, 390 people were asked if they liked dogs, and
37% said they did. Find the margin of error of this poll, at the
90% confidence level.
Give your answer to three decimals
3) You measure 29 watermelons' weights, and find they have a
mean weight of 66 ounces. Assume the population standard deviation
is 5.9 ounces. Based on this, what is the maximal margin of error
associated with a 90% confidence interval for the true population
mean watermelon weight.
Give your answer as a decimal, to two places
± ____ ounces
4)
In a survey, 31 people were asked how much they spent on their
child's last birthday gift. The results were roughly bell-shaped
with a mean of $37 and standard deviation of $8. Find the margin of
error at a 98% confidence level.
Give your answer to two decimal places.
5) For a confidence level of 95% with a sample size of 21, find
the critical t value.
Round your answer to 3 decimal places.
1) Express the confidence interval (25.6%,38.6%)(25.6%,38.6%) in the form of ˆp±ME ____ % ± ___ %...
1. Express the confidence interval 86.5%±4.6% in interval form 2. Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 217 with 23% successes at a confidence level of 80%. M.E. = % 3.A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 6% margin of error at a 99% confidence...
a. You measure 43 watermelons' weights, and find they have a mean weight of 48 ounces. Assume the population standard deviation is 2.2 ounces. Based on this, what is the maximal margin of error associated with a 95% confidence interval for the true population mean watermelon weight? Give your answer as a decimal, to two places ± ounces b. You measure 25 watermelons' weights and find they have a mean weight of 44 ounces. Assume the population standard deviation is...
In a recent poll, 210 people were asked if they liked dogs, and 37% said they did. Find the Margin of Error for this poll, at the 90% confidence level. Give your answer to four decimal places if possible. answer _____
You measure 41 watermelons' weights, and find they have a mean weight of 61 ounces. Assume the population standard deviation is 11.7 ounces. Based on this, what is the maximal margin of error associated with a 90% confidence interval for the true population mean watermelon weight.
2. A psychologist is interested in constructing a 99% confidence interval for the proportion of people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain. 64 of the 802 randomly selected people who were surveyed agreed with this theory. a. With 99% confidence the proportion of all people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain is...
You measure 46 watermelons' weights, and find they have a mean weight of 78 ounces. Assume the population standard deviation is 14.1 ounces. Based on this, construct a 90% confidence interval for the true population mean watermelon weight. Give your answers as decimals, to two places ______________ ± ______________ ounces
For a confidence level of 92%, find the critical value Question 5. Points possible: 1 This is attempt of Out of 500 people sampled, 280 had kids. Based on this, construct a 99% confidence interval for the true population proportion of people with kids. Give your answers as decimals, to three places <p Question 6. Pos t In a recent poll, 410 people were asked if they liked dogs, and 47% said they did. Find the margin of error of...
In a recent poll, 140 people were asked if they liked dogs, and 22% said they did. Find the Margin of Error for this poll, at the 90% confidence level. Give your answer to four decimal places if possible.
1. If n=28, (x-bar)=49, and s=6, find the margin of error at a 95% confidence level. Give your answer to two decimal places. 2. In a survey, 10 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $39 and standard deviation of $8. Find the margin of error at a 90% confidence level. Give your answer to two decimal places. 3. If n=20, (x-bar)=50, and s=20, construct...
can some one help me with this and explain the steps for me? I am really having trouble finding the t value. Due in 2 hours, 34 minutes. Due Thu 05/31/2018 11:59 pm You measure 36 watermelons' weights, and find they have a mean weight of 77 ounces. Assume the population standard deviation is 2.4 ounces. Based on is, what s the maximal margin o emor associated with a 95% confidence interval for the true population mean watermelon weight. Give...