Statistic
9.1 Z test for the Mean
Z test for the Mean Problem:
You are the manager for Oxford Cereals. Among other responsibilities
Data , you are responsible for monitoring the amount in each cereal box.
Null Hypothesis Company specifications requrie a mean weight of 368 grams per box.
Level of Significance 0.05 You select a random sample size of 25 ceral boxes. The standard deviation of the cereal
Population Standard Deviation filing process is 15 grams and we found the sample mean to be 372.5 grams
sample size
sample mean
Intermediate Calculations
Standard Error of the Mean B6/SQRT(B7)
Z Test Statistic (B8-B4)/B11
Two- Tail Test
Lower Critical Value NORMSINV(B5/2)
Upper Critical value NORMSINV(1-B5/2)
p-value 2*(1-NORMSDIST(ABS(B12)))
IF(B17
Statistic: Z test for the Mean
Our Service Charter
1. Professional & Expert Writers: Topnotch Essay only hires the best. Our writers are specially selected and recruited, after which they undergo further training to perfect their skills for specialization purposes. Moreover, our writers are holders of masters and Ph.D. degrees. They have impressive academic records, besides being native English speakers.
2. Top Quality Papers: Our customers are always guaranteed of papers that exceed their expectations. All our writers have +5 years of experience. This implies that all papers are written by individuals who are experts in their fields. In addition, the quality team reviews all the papers before sending them to the customers.
3. Plagiarism-Free Papers: All papers provided byTopnotch Essay are written from scratch. Appropriate referencing and citation of key information are followed. Plagiarism checkers are used by the Quality assurance team and our editors just to double-check that there are no instances of plagiarism.
4. Timely Delivery: Time wasted is equivalent to a failed dedication and commitment. Topnotch Essay is known for timely delivery of any pending customer orders. Customers are well informed of the progress of their papers to ensure they keep track of what the writer is providing before the final draft is sent for grading.
5. Affordable Prices: Our prices are fairly structured to fit in all groups. Any customer willing to place their assignments with us can do so at very affordable prices. In addition, our customers enjoy regular discounts and bonuses.
6. 24/7 Customer Support: At Topnotch Essay, we have put in place a team of experts who answer to all customer inquiries promptly. The best part is the ever-availability of the team. Customers can make inquiries anytime.