6)
FRom the gievn data
Std.dev = 15.5695 , n = 8
= 15.5695/sqrt(8)
= 5.5047
7)
From the given data
mean = 154
s = 20.5913 , n =5
t value at 90% = 2.7764
CI = mena +/- t *(s/sqrt(n))
= 154 +/- 2.7764 *(20.5913/sqrt(5))
= (128.4329 ,179.5671)
b)
N0, because confidence interval contain 175
15 points] 6. A population has a mean of 126. If a random sample of 8...
A population has a mean of 120. If a random sample of 8 items from the population results in the following sampled values, what is the sampling error for the sample? 127 116 102 116 142 138 122 116 The sampling error for the given sample is (Type an integer or a decimal.) h
Tomato weights and Fertilizer: Carl the farmer has three fields of tomatoes, on one he used no fertilizer, in another he used organic fertilizer, and the third he used a chemical fertilizer. He wants to see if there is a difference in the mean weights of tomatoes from the different fields. The sample data is given below. The second table gives the results from an ANOVA test. Carl claims there is a difference in the mean weight for all tomatoes...
Maintaining a healthy weight is important for women’s health. Some physicians recommend being back to your pre-pregnancy weight six months after giving birth. Public health officials are interested in whether this is a realistic goal. Do the women in North Carolina weigh more than their pre-pregnancy weight six months postpartum? In other words, is the six months post-pregnancy weight greater than their pre-pregnancy weight? Use a paired samples t-test to compare pst6wght (variable 1) and prewght (variable 2). This uses...
Tomato weights and Fertilizer (Raw Data, Software Required): Carl the farmer has three fields of tomatoes, on one he used no fertilizer, in another he used organic fertilizer, and the third he used a chemical fertilizer. He wants to see if there is a difference in the mean weights of tomatoes from the different fields. The sample data for tomato-weights in grams is given below. Carl claims there is a difference in the mean weight for all tomatoes between the...
Population 1 Female weights Population 2 male weights 128 190 142 145 130 150 133 127 195 165 166 155 112 155 180 180 180 156 155 188 144 220 140 154 143 200 110 210 160 270 125 250 130 180 150 250 145 240 180 170 175 150 108 155 200 195 151 210 170 155 141 165 200 145 185 190 142 234 125 205 130 151 240 153 160 172 120 200 210 130 220 210...
A population has a mean of 121 If a random sample of 8 items from the population results in the following sama the sampling error for the sample? 118 121 97 140 141 127 138 124
A population has a mean of 122 . If a random sample of 8 items from the population results in the following sampled values, what is the sampling error for the sample 100 147 97 127 141 144 101 130
Question 16 1 pts A population has a mean of 121 If a random sample of 8 items from the population results in the following sampled values what it the sampling error for the sample? 118 121 97 140 141 127 138 124 Question 17 1 pts A company makes windows for use in homes and commercial buildings. The standards for glass thickness call for the glass to average 0.500 inch with a standard deviation equal to 0.045 inch. Suppose...
A population has a mean of 124. If a random sample of 8 items from the population results in the following sampled values, what is the sampling error for the sample? 106 143 103 105 147 110 122 127 The sampling error for the given sample is . (Simplify your answer. Do not round)