You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 25 bacteria reveals a sample mean x¯=66 hours with a standard deviation of s=6.6 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.5 hours at a 98% level of confidence.
What sample size should you gather to achieve a 0.5 hour margin of error? Round your answer up to the nearest whole number.
n = bacteria
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 35 bacteria reveals a sample mean of ¯x=72 hours with a standard deviation of s=6.6 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.6 hours at a 98% level of confidence. What sample size should you gather to achieve a 0.6 hour margin of error? Round your answer up to...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 25 bacteria reveals a sample mean of z = 68 hours with a standard deviation of 8 = 6.6 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.4 hours at a 95% level of confidence. What sample size should you gather to achieve a 0.4 hour margin of error? Round...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 35 bacteria reveals a sample mean of ¯x=66x¯=66 hours with a standard deviation of s=7s=7 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.65 hours at a 90% level of confidence. What sample size should you gather to achieve a 0.65 hour margin of error? Round your answer up to...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 35 bacteria reveals a sample mean of = 70 hours with a standard deviation of 8 = 6.8 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.4 hours at a 99% level of confidence. What sample size should you gather to achieve a 0.4 hour margin of error? Round your...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 35 bacteria reveals a sample mean of ¯ x = 72 hours with a standard deviation of s = 4.2 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.65 hours at a 99% level of confidence. What sample size should you gather to achieve a 0.65 hour margin of error?...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 30 bacteria reveals a sample mean of ¯x=72x¯=72 hours with a standard deviation of s=4.6s=4.6 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.55 hours at a 95% level of confidence. What sample size should you gather to achieve a 0.55 hour margin of error? Round your answer up to...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 30 bacteria reveals a sample mean of x¯=70 hours with a standard deviation of s=5.2 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.4 hours at a 95% level of confidence. What sample size should you gather to achieve a 0.4 hour margin of error? Round your answer up to...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 40 bacteria reveals a sample mean of z = 80 hours with a standard deviation of s = 4 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.7 hours at a 95% level of confidence. What sample size should you gather to achieve a 0.7 hour margin of error? Round...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 40 bacteria reveals a sample mean of T = 80 hours with a standard deviation of s = 4 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.7 hours at a 95% level of confidence. What sample size should you gather to achieve a 0.7 hour margin of error? Round...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 30 bacteria reveals a sample mean of ū = 74 hours with a standard deviation of s = 4.2 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.65 hours at a 90% level of confidence. What sample size should you gather to achieve a 0.65 hour margin of error? Round...